Of or pertaining to hypothenuse.

Same as Hypotenuse.

The side of a right-angled triangle that is opposite to the right angle.

A supposition; a proposition or principle which is supposed or taken for granted, in order to draw a conclusion or inference for proof of the point in question; something not proved, but assumed for the purpose of argument, or to account for a fact or an occurrence; as, the hypothesis that head winds detain an overdue steamer.

Characterized by, or of the nature of, an hypothesis; conditional; assumed without proof, for the purpose of reasoning and deducing proof, or of accounting for some fact or phenomenon.

One who proposes or supports an hypothesis.

Same as Gorgerin.

A division of ciliated Infusoria in which the cilia cover only the under side of the body.

A curve, traced by a point in the radius, or radius produced, of a circle which rolls upon the concave side of a fixed circle. See Hypocycloid, Epicycloid, and Trochoid.

A vivid, picturesque description of scenes or events.

A crystalline, nitrogenous substance, closely related to xanthin and uric acid, widely distributed through the animal body, but especially in muscle tissue; -- called also sarcin, sarkin.

Anterior in age to the lowest rocks which contain organic remains.

Affected with hypochondria; hypped.

See Hyppogriff.

Resembling the Greek letter / in form; hyoid.

A genus of marsupials comprising the musk kangaroos.

An instrument for measuring heights by observation of barometric pressure; esp., one for determining heights by ascertaining the boiling point of water. It consists of a vessel for water, with a lamp for heating it, and an inclosed thermometer for showing the temperature of ebullition.

Of or pertaining to hypsometry.

That branch of the science of geodesy which has to do with the measurement of heights, either absolutely with reference to the sea level, or relatively.

Under the tail; -- applied to the bones which support the caudal fin rays in most fishes.

Of or pertaining to the Hyracoidea. One of the Hyracoidea.

An order of small hoofed mammals, comprising the single living genus Hyrax.

An extinct horse genus, formerly called genus Eohippus.

Any animal of the genus Hyrax, of which about four species are known. They constitute the order Hyracoidea. The best known species are the daman (Hyrax Syriacus) of Palestine, and the klipdas (Hyrax capensis) of South Africa. Other species are Hyrax arboreus and Hyrax Sylvestris, the former from Southern, and the latter from Western, Africa. See Daman.

Of or pertaining to Hyrcania, an ancient country or province of Asia, southeast of the Caspian (which was also called the Hyrcanian) Sea.

Millet.

A wood. See Hurst.

A fragrant kind of green tea.

A plant (Hyssopus officinalis). The leaves have an aromatic smell, and a warm, pungent taste.

A Eurasian genus of perennial herbs or subshrubs.

Having the leaves expand after the flowers have opened.

A lagging or retardation of the effect, when the forces acting upon a body are changed, as if from velocity or internal friction; a temporary resistance to change from a condition previously induced, observed in magnetism, thermoelectricity, etc., on reversal of polarity.

Of or pertaining to hysteresis.

A nervous affection, occurring almost exclusively in women, in which the emotional and reflex excitability is exaggerated, and the will power correspondingly diminished, so that the patient loses control over the emotions, becomes the victim of imaginary sensations, and often falls into paroxism or fits.

Extremely funny.

Of or pertaining to hysteria.

Hysteria.

A disease resembling hysteria in its nature, and characterized by the occurrence of epileptiform convulsions, which can often be controlled or excited by pressure on the ovaries, and upon other definite points in the body.

Producing hysteria; as, the hysterogenicpressure points on the surface of the body, pressure upon which is said both to produce and arrest an attack of hysteria.

A figure by which the ordinary course of thought is inverted in expression, and the last put first; -- called also hysteron proteron.

A plant, like the fungus, which lives on dead or living organic matter.

The act of cutting into the uterus, as in C/sarean section. See under C/sarean.

Like or pertaining to the porcupines.

Like, or allied to, the porcupines; -- said of a group (Hystricomorpha) of rodents.

A genus of rodents, including the porcupine.

A small haven. See Hithe.

The nominative case of the pronoun of the first person; the word with which a speaker or writer denotes himself.

See Y-.

any document testifying to the identity of the bearer, especially a card or badge.

a measure of a person's intelligence as indicated by an intelligence test; the ratio of a person's mental age to their chronological age (multiplied by 100).

Colloquial contraction of I have.

Indoleacetic acid, a plant hormone promoting elongation of stems and roots.

Materia Medica; that branch of therapeutics which treats of remedies.

An iambus or iambic.

An iambic foot; an iambus. A verse composed of iambic feet.

Iambic.

In a iambic manner; after the manner of iambics.

To satirize in iambics; to lampoon.

A foot consisting of a short syllable followed by a long one, as in /m/ns, or of an unaccented syllable followed by an accented one, as invent; an iambic. See the Couplet under Iambic, n.

Any gastropod of the genus Ianthina, of which various species are found living in mid ocean; -- called also purple shell, and violet snail.

Of or pertaining to medicine, or to medical men.

Of or pertaining to iatrochemistry, or to the iatrochemists.

A physician who explained or treated diseases upon chemical principles; one who practiced iatrochemistry.

Chemistry applied to, or used in, medicine; -- used especially with reference to the doctrines in the school of physicians in Flanders, in the 17th century, who held that health depends upon the proper chemical relations of the fluids of the body, and who endeavored to explain the conditions of health or disease by chemical principles.

Of or pertaining to iatromathematicians or their doctrine.

One of a school of physicians in Italy, about the middle of the 17th century, who tried to apply the laws of mechanics and mathematics to the human body, and hence were eager student of anatomy; -- opposed to the iatrochemists.

Of or pertaining to Iberia.

A genus of Old World herbs and subshrubs including the candytuft.

A sparrow-sized fossil bird of the Lower Cretaceous having a strutlike pectoral bone and vestigial tail; found in Spain; considered possibly the third most primitive of all birds.

One of several species of wild goats having very large, recurved horns, transversely ridged in front; -- called also steinbok.

In the same place; -- abbreviated ibid. or ib.

Any bird of the genus Ibis and several allied genera, of the family Ibid/, inhabiting both the Old World and the New. Numerous species are known. They are large, wading birds, having a long, curved beak, and feed largely on reptiles.

The International Bank for Reconstruction and Development, a United Nations agency created to assist developing nations by loans guaranteed by member governments.

Henrik Ibsen (1828-1906), Norwegian poet and dramatist.

of or pertaining to Henrik Ibsen.

The dramatic practice or purpose characteristic of the writings of Henrik Ibsen (1828-1906), Norwegian poet and dramatist, whose best-known plays deal with conventional hypocrisies, the story in each play thus developing a definite moral problem.

a nonsteroidal anti-inflammatory medicine used to relieve the pain of arthritis and as an analgesic and antipyretic; Advil and Motrin and Nuprin are trademarks of brands of ibuprofen tablets.

A small tropical American tree (Chrysobalanus icaco) bearing edible plumlike fruit.

Relating to the patriarch Abraham.

Of or pertaining to the Brahmans or to their doctrines and worship.

Soaring too high for safety, like Icarus; adventurous in flight.

An intercontinental ballistic missile, a long-range ballistic missile that is capable of traveling from one continent to another. Contrasted with IRBM.

Water or other fluid frozen or reduced to the solid state by cold; frozen water. It is a white or transparent colorless substance, crystalline, brittle, and viscoidal. Its specific gravity (0.92, that of water at 4/ C. being 1.0) being less than that of water, ice floats.

To cover with ice; to convert into ice, or into something resembling ice.

A shoe with a metal runner (called a blade) attached to permit the wearer to glide on ice.

One who skates on ice wearing an ice skate; esp. an athlete who performs athletic or artistic movements on a sheet of ice, wearing ice skates; a speed skater or a figure skater.

Composed of ice.

having flow restricted by ice; -- of rivers or conduits; as, ice-clogged rivers.

as cold as ice; extremely cold.

free of ice and open to travel; -- of water routes; as, an ice-free channel in the river.

A large mass of ice, generally floating in the ocean.

An Arctic sea bird, as the Arctic fulmar.

A ship with a reinforced bow to break up ice and keep channels open for navigation; an icebreaker.

Totally surrounded with ice, so as to be incapable of advancing; as, an icebound vessel; also, surrounded by or fringed with ice so as to hinder easy access; as, an icebound coast.

a ship with a reinforced bow and powerful engines designed to break up layers of ice on waterways and keep channels open for navigation.

a mass of ice and snow that permanently covers a large area of land (e.g., the polar regions or a mountain peak).

Covered with ice.

A frozen waterfall, or mass of ice resembling a frozen waterfall.

a building used for storing ice, especially one built partly below ground and insulated so as to preserve ice obtained during the winter from frozen lakes or rivers.

A native, or one of the Scandinavian people, of Iceland.

The language of the Icelanders. It is one of the Scandinavian group, and is more nearly allied to the Old Norse than any other language now spoken.

A man who is skilled in traveling upon ice, as among glaciers.

The crash or concussion attending the breaking up of masses of ice, -- often due to contraction from extreme cold.

I.

Any carnivorous mammal of the genus Herpestes, and family Viverrid/. Numerous species are found in Asia and Africa. The Egyptian species (Herpestes ichneumon), which ranges to Spain and Palestine, is noted for destroying the eggs and young of the crocodile as well as various snakes and lizards, and hence was considered sacred by the ancient Egyptians. The common species of India (Herpestes griseus), known as the mongoose, has similar habits and is often domesticated. It is noted for killing the cobra.

Of or pertaining to the Ichneumonid/, or ichneumon flies. One of the Ichneumonid/.

The ichneumon flies.

A fossil footprint; as, the ichnites in the Triassic sandstone.

Of or pertaining to ichonography; describing a ground plot.

A horizontal section of a building or other object, showing its true dimensions according to a geometric scale; a ground plan; a map; also, the art of making such plans.

A fossil footprint; an ichnite.

Same as Ichnology.

Of or pertaining to ichnology.

The branch of science which treats of fossil footprints.

The search for the traces of anything.

An ethereal fluid that supplied the place of blood in the veins of the gods.

Infection of the blood with ichorous or putrid substances.

Of or like ichor; thin; watery; serous; sanious.

A substance from the egg yolk of osseous fishes.

A nitrogenous substance resembling vitellin, present in the egg yolk of cartilaginous fishes.