Formic aldehyde, regarded as a methylene derivative.

A figure in which an epithet of a contrary signification is added to a word; e. g., cruel kindness; laborious idleness.

A salt of the supposed oxymuriatic acid; a chloride.

Pertaining to, or consisting of, oxygen and muriatic acid, that is, hydrochloric acid.

See Betaine.

Acid; producing acid; -- applied especially to certain glands and cells in the stomach.

Excessive acuteness of sight.

Pertaining to, or designating, the phenol formerly called oxyphenic acid, and now oxyphenol and pyrocatechin. See Pyrocatechin.

A phenol, C6H4(OH)2, produced by the distillation of catechin; called also oxyphenic acid, and now pyrocatechin.

Acuteness or shrillness of voice.

Hydroxy quinoline; a phenol derivative of quinoline, -- called also carbostyril.

The maioid crabs.

A mixture of two parts of the oil of roses with one of the vinegar of roses.

A salt of an oxyacid, as a sulphate.

A ternary compound of oxygen and sulphur.

An oxysulphide.

Promoting uterine contractions, or parturition. An oxytocic medicine or agent.

One of three hydroxy derivatives of toluene, called the cresols. See Cresol.

An acute sound.

Oxytone.

A hearing or an inspection, as of a deed, bond, etc., as when a defendant in court prays oyer of a writing.

Hear; attend; -- a term used by criers of courts to secure silence before making a proclamation. It is repeated three times.

See Eyelet.

Onion.

Any marine bivalve mollusk of the genus Ostrea. They are usually found adhering to rocks or other fixed objects in shallow water along the seacoasts, or in brackish water in the mouth of rivers. The common European oyster (Ostrea edulis), and the American oyster (Ostrea Virginiana), are the most important species.

Any one of several species of wading birds of the genus Haematopus having stout legs and bill and mostly black-and-white plumage, which frequent seashores and feed upon oysters and other shellfish. The European species (Haematopus ostralegus), the common American species (Haematopus palliatus), and the California, or black, oyster catcher (Haematopus Bachmani) are the best known.

A green membranous seaweed (Ulva) often found growing on oysters but common on stones, piles, etc.

Gathering, or dredging for, oysters.

A young oyster.

A discharge of fetid matter from the nostril, particularly if associated with ulceration of the soft parts and disease of the bones of the nose.

A waxlike mineral resin; -- sometimes called native paraffin, and mineral wax.

The act of treating with ozone; also, the act of converting into, or producing, ozone; ozonization.

A colorless gaseous substance (O3) obtained (as by the silent discharge of electricity in oxygen) as an allotropic form of oxygen, containing three atoms in the molecule. It is a strong oxidizer, and probably exists in the air, though by the ordinary tests it is liable to be confused with certain other substances, as hydrogen dioxide, or certain oxides of nitrogen. It derives its name from its peculiar odor, which resembles that of weak chlorine.

Pertaining to, resembling, or containing, ozone.

The act or process of producing, or of subjecting to the action of, ozone.

Ozonation.

To convert into ozone, as oxygen. To treat with ozone.

An apparatus or agent for the production or application of ozone.

An instrument for ascertaining the amount of ozone in the atmosphere, or in any gaseous mixture.

Pertaining to, or used for, the determination of the amount of ozone; of or relating to ozonometry.

The measurement or determination of the quantity of ozone.

An apparatus employed to indicate the presence, or the amount, of ozone.

Serving to indicate the presence or the amount of ozone.

Pertaining to or containing, ozone.

A shortened form of Papa.

A toll for passage over another person's grounds.

The zebra.

The Easter festival.

A form of cereal for infants.

Of, pertaining to, or fit for, pabulum or food; affording food.

Affording pabulum, or food; alimental.

The means of nutriment to animals or plants; food; nourishment.

A political action committee, a committee formed by an organization or special-interest group to raise money to support candidates for office or to influence legislation. A PAC provides a legal means for corporations in the U. S. to support political candidates even when direct contributions from corporations to candidates is forbidden by law. In theory, the corporation may not itself contribute to a PAC, but may pay the expenses of raising money from individuals. PACs may also be formed by organizations other than commercial corporations, such as trade associations.

A kind of moccasin, having the edges of the sole turned up and sewed to the upper.

A large burrowing South American rodent (Agouti paca syn. Cuniculus paca, formerly C/logenys paca), having blackish brown fur, with four parallel rows of white spots along its sides; the spotted cavy. It is closely allied to the agouti and the Guinea pig and is highly esteemed as food.

Placable.

A species of hickory. See Pecan.

Appeased; pacified; placated; tranquil.

Pacified; pacate; placated.

The act of pacifying; a peacemaking.

To walk over with measured tread; to move slowly over or upon; as, the guard paces his round.

Having, or trained in, [such] a pace or gait; trained; -- used in composition; as, slow-paced; a thorough-paced villain.

a specialized bit of heart tissue that controls the heartbeat.

One who, or that which, paces.

A horse used to set the pace in racing.

A civil or military authority in Turkey or Egypt; same as Pasha.

A divinity worshiped by the ancient Peruvians as the creator of the universe.

The fragrant roots of the Saussurea Costus, exported from India to China, and used for burning as incense. It is supposed to be the costus of the ancients.

See Pashalic.

A popular Japanese pinball game played on a vertical board.

An instrument for measuring thickness, as of the glass of a mirror, or of paper; a pachymeter.

A substance resembling gutta-percha, and used to adulterate it, obtained from the East Indian tree Isonandra acuminata.

A small East Indian shrubby mint (Pogostemon cablin); a fragrant oil from its leaves is used in perfumes.

Having the pericarp thick.

A genus of arborial insectivorous birds.

A bird or other animal having thick toes.

Having thick toes.

Any of various nonruminant hoofed mammals having very thick skin, including the elephant, rhinoceros, and hippopotamus, one of the Pachydermata.

An abnormal thickening of the skin (usually unilateral on an extremity) caused by congenital enlargement of lymph vessel and lymph vessel obstruction.

Of or relating to the pachyderms; as, pachydermal dentition.

A group of hoofed mammals distinguished for the thickness of their skins, including the elephant, hippopotamus, rhinoceros, tapir, horse, and hog; the pachyderms. It is now considered an artificial group.

Same as pachyderma.

Of or pertaining to the pachyderms.

Same as pachyderma.

Related to the pachyderms.

Having a thick tongue; -- applied to a group of lizards (Pachygloss/), including the iguanas and agamas.

The condition of having an enlarged thick tongue.

Inflammation of the dura mater or outer membrane of the brain.

Same as Pachometer.

One of a family of bats, including those which have thick external ears.

A small genus of tropical vines having tuberous roots.

Any plant of the genus Pachysandra; they are low-growing evergreen herbs or subshrubs having dentate leaves and used as ground cover.

The third stage of the prophase of meiosis, the stage in which the pairing of homologous chromosomes has been completed.

Capable of being pacified or appeased; placable.

Of or pertaining to peace; of a peaceful character; not warlike; not quarrelsome; as, a pacific nature or condition.

The Pacific Ocean, the largest ocean.

Placable.

Of or pertaining to peace; pacific.

The act or process of pacifying, or of making peace between parties at variance; reconciliation.

One who, or that which, pacifies; a peacemaker.

Tending to make peace; conciliatory.

A pacifist.

A peaceful person; -- applied specif. by the Spaniards to the natives in Cuba and the Philippine Islands who did not oppose the Spanish arms.

One who or that which pacifies.

the doctrine that all violence is unjustifiable.

A person opposed to violence as a means of settling disputes.

Adhering to pacifism; opposed to war; -- of people.

To make to be at peace; to appease; to calm; to still; to quiet; to allay the agitation, excitement, or resentment of; to tranquillize; as, to pacify a man when angry; to pacify pride, appetite, or importunity.

freeing from fear and anxiety.

the speed at which a composition is to be played.

Of, pertaining to, or discovered by, Filippo Pacini (1812-1883), an Italian physician of the 19th century.

To make up packs, bales, or bundles; to stow articles securely for transportation.

Any of several bushy-tailed rodents of the genus Neotoma of western North America, especially Neotoma cinerea, which hoard food and other objects in their nests.

A strong three-ply thread or small twine used to sew or tie packs or packages.

Act or process of packing.

Enclosed in a package{2} or protective covering; as, packaged cereals.

Same as jammed.

A person whose business is to pack things; especially, one who packs food for preservation or for the market; as, a pork packer.

A genus of American or East Asian perennial herbs with yellow to orange or red flower rays; it is sometimes included in genus Senecio.

To ply with a packet or dispatch boat.