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The condition of having the natural powers obstructed in their usual course; the arrest of the vital functions; death. [Poetic] To die, and go we know not where, To lie in cold obstruction, and to rot. Shak.

Anything that obstructs or closes a passage; esp., that which obstructs natural passages in the body; as, a medicine which acts as an obstruent.

The transient approximation of the edges of a natural opening; imperforation. Dunglison. Occlusion of gases (Chem. & Physics), the phenomenon of absorbing gases, as exhibited by platinum, palladium, iron, or charcoal; thus, palladium absorbs, or occludes, nearly a thousand times its own volume of hydrogen, and in this…

An alleged force or natural power, supposed, by Reichenbach and others, to produce the phenomena of mesmerism, and to be developed by various agencies, as by magnets, heat, light, chemical or vital action, etc.; -- called also odyle or the odylic force. [Archaic] That od force of German Reichenbach Which still, from fe…

Of, pertaining to, or resembling, a natural order of plants (Oleaceæ), mostly trees and shrubs, of which the olive is the type. It includes also the ash, the lilac, the true jasmine, and fringe tree.

A natural mixture of a terebinthinate oil and a resin.

t of omitting; neglect or failure to do something required by propriety or duty. The most natural division of all offenses is into those of omission and those of commission. Addison.

Pertaining to, or resembling, a natural order of plants (Onagraceæ or Onagrarieæ), which includes the fuchsia, the willow- herb (Epilobium), and the evening primrose ().

One versed in the natural history of serpents.

That part of natural history which treats of the ophidians, or serpents.

Pertaining to, or resembling, a natural order (Orchidaceæ) of endogenous plants of which the genus Orchis is the type. They are mostly perennial herbs having the stamens and pistils united in a single column, and normally three petals and three sepals, all adherent to the ovary. The flowers are curiously shaped, often…

dignity, as acolyte, exorcist, reader, doorkeeper. -- Money order. See under Money. -- Natural order. (Bot.) See def. 12, Note. -- Order book. (a) A merchant's book in which orders are entered.

appointed, etc. The holy and wise ordination of God. Jer. Taylor. Virtue and vice have a natural ordination to the happiness and misery of life respectively. Norris.

A natural part or structure in an animal or a plant, capable of performing some special action (termed its function), which is essential to the life or well-being of the whole; as, the heart, lungs, etc., are organs of animals; the root, stem, foliage, etc., are organs of plants.

The natural or wild species from which a domesticated or cultivated variety has been derived; as, the wolf is thought by some to be the original of the dog, the blackthorn the original of the plum.

That departament of natural history which treats of technical terms.

That branch of zoölogy which treats of the natural history of birds and their classification.

c sesquisulphide, produced artificially as an amorphous lemonyellow powder, and occurring naturally as a yellow crystalline mineral; -- formerly called auripigment. It is used in king's yellow, in white Indian fire, and in certain technical processes, as indigo printing. Our orpiment and sublimed mercurie. Chaucer. Red…

e flowers. It is found on dry, sandy places, and on old walls, in England, and has become naturalized in America. Called also stonecrop, and live-forever. [Written also orpin.]

To force so much wind into a pipe that it produces an overtone, or a note higher than the natural note; thus, the upper octaves of a flute are produced by overblowing.