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Of, pertaining to, or designating, an acid formerly supposed to be the acid of oenanthylic ether, but now known to be a mixture of higher acids, especially capric acid. [Obs.]

Designating a time when one is not strictly attentive to business or affairs, or is absent from his post, and, hence, a time when affairs are not urgent; as, he took an off day for fishing: an off year in politics. "In the off season." Thackeray. Off side. (a) The right hand side in driving; the farther side. See Gee.…

life; advanced in the course of existence; having (a certain) length of existence; -- designating the age of a person or thing; as, an infant a few hours old; a cathedral centuries old. And Pharaoh said unto Jacob, How old art thou Cen. xlvii. 8.

Virginia; -- a name of uncertain origin, perh. from the old designation of the colony as "the Colony and Dominion of Virginia."

Forming or producing an oil; specifically, designating a colorless gaseous hydrocarbon called ethylene. [Archaic]

Of, pertaining to, or designating, certain strata which occupy an intermediate position between the Eocene and Miocene periods. -- n.

Applied to a signature when the body of the instrument is in another's handwriting. Burrill.

The ovum, after fusion with the spermatozoön in impregnation. Balfour.

Of, pertaining to, or designating, a substance (called ophelic acid) extracted from a plant (Ophelia) of the Gentian family as a bitter yellowish sirup, used in India as a febrifuge and tonic.

Of, pertaining to, or designating, an organic acid obtained by the oxidation of narcotine.

The designation or nomenclature of organs. B. G. Wilder.

Designating, or pertaining to, certain beds, chiefly limestone, characteristic of the latest period of the Silurian age. Oriskany period, a subdivision of the American Paleozoic system intermediate or translational in character between the Silurian and Devonian ages. See Chart of Geology.

Pertaining to, or designating, an acid found in certain lichens, and called also lecanoric acid. [Formerly written also orseillic.]

Pertaining to, or designating, an organic acid obtained by a partial decomposition of orsellic acid as a white crystalline substance, and related to protocatechuic acid.

A combining form (also used adjectively), designating:

Designating a complex ether, C.(OC2H5)4, which is obtained as a liquid of a pleasant ethereal odor by means of chlorpicrin, and is believed to be a derivative of the hypothetical normal carbonic acid, C.(OH)4.

Designating the form of silicic acid having the normal or highest number of hydroxyl groups.

Of, pertaining to, or designating, a nitrogenous acid of osmium, H2N2Os2O5, forming a well-known series of yellow salts.

Pertaining to, derived from, or containing, osmium; specifically, designating those compounds in which it has a valence higher than in other lower compounds; as, osmic oxide. Osmic acid. (Chem.) (a) Osmic tetroxide. [Obs.] (b) Osmic acid proper, an acid analogous to sulphuric acid, not known in the free state, but form…

A genus of plectognath fishes having the body covered with solid, immovable, bony plates. It includes the trunkfishes.