A iodide of quinine obtained as a brown substance,. It is the base of herapathite. See Herapathite.

A peculiar substance obtained from the thyroid gland, containing from nine to ten per cent of iodine.

Pertaining to, or containing, iodine. See -ous (chemical suffix).

Iodide.

Silver iodide, a mineral of a yellowish color.

A silicate of alumina, iron, and magnesia, having a bright blue color and vitreous luster; cordierite. It is remarkable for its dichroism, and is also called dichroite. A variety called Caribbean iolite has a lighter blue color.

an atom or goup of atoms (radical) carrying an electrical charge. It is contrasted with neutral atoms or molecules, and free radicals. Certain compounds, such as sodium chloride, are composed of complementary ions in the solid (crystalline) as well as in solution. Others, notably acids such as hydrogen chloride, may occur as neutral molecules in the pure liquid or gas forms, and ionize almost completely in dilute aqueous solutions. In solutions (as in water) ions are frequently bound non-covalently with the molecules of solvent, and in that case are said to be solvated. According to the electrolytic dissociation theory, the molecules of electrolytes are divided into ions by water and other solvents. An ion consists of one or more atoms and carries one unit charges of electricity, 3.4 x 10-10 electrostatic units, or a multiple of this. Those which are positively electrified (hydrogen and the metals) are called cations; negative ions (hydroxyl and acidic atoms or groups) are called anions.

to add ions.

A region of Western Asia Minor colonized by the Ancient Greeks.

Of or pertaining to Ionia or the Ionians; Ionic. A native or citizen of Ionia.

A foot consisting of four syllables: either two long and two short, -- that is, a spondee and a pyrrhic, in which case it is called the greater Ionic; or two short and two long, -- that is, a pyrrhic and a spondee, in which case it is called the smaller Ionic. A verse or meter composed or consisting of Ionic feet.

Of or pertaining to ions; composed of ions, containing ions, or breaking down into ions when dissolved in a polar solvent; as, an ionic solution will conduct a current of electricity. Opposite of nonionic.

A genus of violaceous plants, chiefly found in tropical America, some species of which are used as substitutes for ipecacuanha.

the process of converting neutral atoms or molecules into ions. The process may occur by dissolving an ionic substance in a dissociating solvent, such as water, or by adding or subtracting an electron to or from an atom or molecule. The latter process occurs, for example, in an electron beam in a mass spectrometer and by interaction of substances with ionizing radiation.

To convert (an atom or molecule) into ions, e. g. by dissolving in water, by reaction with acid or alkali, or by interaction with ionizing radiation. See ionization.

converted totally or partly into ions. Opposite of nonionized and unionized.

rays of rapidly moving subatomic particles, x-reys, or gamma rays, sufficiently energetic to cause ionization when absorbed by matter.

A compound that enhances transport of ions across cellular membranes, by binding them and carrying them across. As a class ionophores tend to be lipophilic in nature; each compound is usually specific for one or a small number of ions.

the outer region of the earth's atmosphere, beyond which is the exosphere; it contains a high concentration of free electrons and ions, and extends from about 50 miles to about 250 miles above the earth's surface, but the height shows daily and seasonal variation, and the composition of the particles in the ionosphere is also affected by events such as solar flares.

The frequent use of the sound of iota (that of English e in be), as among the modern Greeks; also, confusion from sounding /, /, /, /, //, etc., like /.

A tribe of Indians which formerly occupied the region now included in the State of Iowa.

An abbreviation of Ipecacuanha, and in more frequent use.

The root of a Brazilian rubiaceous herb (Cepha/lis Ipecacuanha), largely employed as an emetic; also, the plant itself; also, a medicinal extract of the root. Many other plants are used as a substitutes; among them are the black or Peruvian ipecac (Psychotria emetica), the white ipecac (Ionidium Ipecacuanha), the bastard or wild ipecac (Asclepias Curassavica), and the undulated ipecac (Richardsonia scabra).

Hippocras.

A genus of twining plants with showy monopetalous flowers, including the morning-glory, the sweet potato, and the cypress vine.

Pertaining to, or designating, an acid obtained by the oxidation of convolvulin (obtained from jalap, the tubers of Ipom/a purga), and identical in most of its properties with sebacic acid.

a battle between the successors of Alexander the Great (301 BC); Lysimachus and Seleucus defeated Antigonus and Demetrius.

The chemical symbol for iridium, a metallic element of the platinum group. It has atomic number 77 and an atomic weight of 192.22.

The Irish Republican Army, a group in Ireland with the primary goal of promoting the unification of Ireland and the severing of the political bond of Northern Ireland with Great Britain, of mostly secret membership, with a militant wing sponsoring terrorist activities such as bombings and the killings of police, British soldiers, and Unionist sympathizers in Northern Ireland.

Irascible; choleric.

A decree of the Sultan.

same as Iraqi.

The native name of Persia, the name adopted by the modern nation of Iran.

a native or inhabitant of Iran.

Of or pertaining to Iran. A native of Iran; also, the Iranian or Persian language, a division of the Aryan family of languages, the modern version of which is called Farsi.

Iranian.

a native or inhabitant of Iraq.

The quality or state of being irascible; irritability of temper; irascibleness.

Prone to anger; easily provoked or inflamed to anger; choleric; irritable; as, an irascible man; an irascible temper or mood.

Angry; incensed; enraged.

Anger; wrath.

Full of ire; angry; wroth.

Wrathfulness.

An officer in the Greek empire having functions corresponding to those of a justice of the peace.

Fitted or designed to promote peace; pacific; conciliatory; peaceful.

A proposition or device for securing peace, especially in the church.

That branch of Christian science which treats of the methods of securing unity among Christians or harmony and union among the churches; -- called also Irenical theology.

Any very hard rock.

Of or pertaining to the iris.

Irishism.

Of or pertaining to the iris or rainbow; prismatic; as, the iridal colors.

The act or process of cutting out a portion of the iris in order to form an artificial pupil.

Pertaining to, or resembling, a large natural order of endogenous plants (Iridace/), which includes the genera Iris, Ixia, Crocus, Gladiolus, and many others.

Exhibition of colors like those of the rainbow, especially a surface reflection which changes color with the angle at which the object is viewed; the quality or state of being iridescent; a prismatic play of color; as, the iridescence of mother-of-pearl. It is due to interference of light waves reflected from the front and back surfaces of a thin layer transpatrent or semitransparent film.

Having colors like the rainbow; exhibiting a play of changeable colors; nacreous; prismatic; as, iridescent glass. See iridescence.

Of or pertaining to the iris or rainbow.

Iridescent.

Of or pertaining to iridium; -- said specifically of those compounds in which iridium has a relatively high valence.

A kind of ophthalmoscope.

Of or pertaining to iridium; -- applied specifically to compounds in which iridium has a low valence.

A nitrogenous base C10H9N, extracted from coal-tar naphtha, as an oily liquid. It is a member of the quinoline series, and is probably identical with lepidine.

The native compound of iridium and osmium. It is found in flattened metallic grains of extreme hardness, and is often used for pointing gold pens.

The goddess of the rainbow, and swift-footed messenger of the gods.

Exhibiting the prismatic colors; irised; iridescent.

A philosophical toy for exhibiting the prismatic tints by means of thin films.

Having colors like those of the rainbow; iridescent.

The natives or inhabitants of Ireland, esp. the Celtic natives or their descendants.

A mode of speaking peculiar to the Irish; an Hibernicism.

A man born in Ireland or of the Irish race; an Hibernian.

The Celtic people of Ireland.

An inflammation of the iris of the eye.

To weary; to give pain; to annoy.

Wearisome; tedious; disagreeable or troublesome by reason of long continuance or repetition; as, irksome hours; irksome tasks.

Same as gossan.

A locomotive; -- an term no longer used.

A steel chamber, usually cylindrical, enclosing the entire body of a person except for the head, used to assist respiration for people suffering from disease, especially poliomyelitis. A reciprocating piston at the end causes alternating high and low pressure inside, which forces or assists the breathing of the patient within.

An instrument of torture used in the middle ages, consisting of a box large enough to hold a person, often in the shape of a woman, and having multiple sharp spikes on the inside. Called also the iron maiden of Nuremberg.

Any of the oxides of iron, especially ferric oxide.

The the process of deterioration afflicting a ship that is iron-sick.

See under Iron, a.

Cased or covered with iron, as a vessel; ironclad.

Closefisted; stingy; mean.

Of a gray color, somewhat resembling that of iron freshly broken. An iron-gray color; also, a horse of this color.

Hard-hearted; unfeeling; cruel; as, an iron-hearted master.

Able to be attached (to clothing) by applying pressure and heat, as with a hand iron; -- of cloth items specially made with a glue that is softened by heat; -- used especially of patches to clothing or accessories to clothing, such as replacement pockets.

Having the ironwork loose or corroded; -- said of a ship when her bolts and nails are so eaten with rust that she has become leaky.

Having iron sides, or very firm sides.

Bound as with iron; rugged; as, an ironbound coast.

having an outer covering of iron or steel; as, an ironclad war vessel.

One who, or that which, irons.

A fragrant liquid substance, a mixture of several isomers of the formula C14H22O, forming the essence of the violet fragrance, commonly isolated from orris oil or from the rhizomes of Iris. The main ingredient in violets is /-irone, which occurs as both cis and trans stereoisomers. Called also 6-methylionone.

A European composite herb (Centaurea nigra); -- so called from the resemblance of its knobbed head to an iron ball fixed on a long handle.

Ironical.

The act or process of smoothing, as clothes, with hot flatirons.

Resembling iron, as in taste.

One who uses irony.

A manufacturer of iron, or large dealer therein.

A dealer in iron or hardware.

Hardware; a general name for all articles made of iron.

a man of great strength and endurance, especially on who is brave.

A cuirassier or cuirassiers; also, hardy veteran soldiers; -- applied specifically to Cromwell's cavalry.

A nickname for Oliver Cromwell.

A worker in iron; one who makes and repairs utensils of iron; a blacksmith.

A hard, earthy ore of iron.

Articles made of iron, as household utensils, tools, and the like.

A tall weed with purplish flowers (Vernonia Noveboracensis). The name is also applied to other plants of the same genus.

A tree unusually hard, strong, or heavy wood.

Anything made of iron; -- a general name of such parts or pieces of a building, vessel, carriage, etc., as consist of iron.

An herb of the Mint family (Sideritis), supposed to heal sword cuts; also, a species of Galeopsis.

Of, pertaining to, or designating, one of the principal linguistic stocks of the North American Indians. The territory of the northern Iroquoian tribes, of whom the Five Nations, or Iroquois proper, were the chief, extended from the shores of the St. Lawrence and of Lakes Huron, Ontario, and Erie south, through eastern Pennsylvania, to Maryland; that of the southern tribes, of whom the Cherokees were chief, formed part of Virginia, the Carolinas, Georgia, Tennessee, and Kentucky. All of the tribes were agricultural, and they were noted for large, communal houses, palisaded towns, and ability to organize, as well as for skill in war. An Indian of an Iroquoian tribe.

A powerful and warlike confederacy of Indian tribes, formerly inhabiting Central New York and constituting most of the Five Nations. Also, any Indian of the Iroquois tribes.

Irascible; passionate.

Making irps.

A fantastic grimace or contortion of the body.

Irradiating or illuminating; as, the irradiant moon.

Illuminated; irradiated.

To root deeply.

The quality or state of being irrational; absence of rationality.

In an irrational manner.

Irrationality.