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premonitions regarding; to predict; to augur; as, to omen ill of an enterprise. The yet unknown verdict, of which, however, all omened the tragical contents. Sir W. Scott.

for one purpose alone; simply; merely; barely. And to be loved himself, needs only to be known. Dryden.

To make known; to discover; also, to render available or accessible for settlements, trade, etc. The English did adventure far for to open the North parts of America. Abp. Abbot.

Before unused or unknown; new; as, a book full of original matter. Original sin (Theol.), the first sin of Adam, as related to its consequences to his descendants of the human race; -- called also total depravity. See Calvinism.

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

) Osmic tetroxide. [Obs.] (b) Osmic acid proper, an acid analogous to sulphuric acid, not known in the free state, but forming a well-known and stable series of salts (osmates), which were formerly improperly called osmites. -- Osmic tetroxide (Chem.), a white volatile crystalline substance, OsO4, the most stable and…

smine. It is a hard, infusible, bluish or grayish white metal, and the heaviest substance known. Its tetroxide is used in histological experiments to stain tissues. Symbol Os. Atomic weight 191.1. Specific gravity 22.477.

A large bird of the genus Struthio, of which Struthio camelus of Africa is the best known species. It has long and very strong legs, adapted for rapid running; only two toes; a long neck, nearly bare of feathers; and short wings incapable of flight. The adult male is about eight feet high.

An extinct genus of huge vertebrates, probably dinosaurs, known only from four-toed tracks in Triassic sandstones.

A tribe of Indians who, when first known, lived on the Ottawa River. Most of them subsequently migrated to the southwestern shore of Lake Superior.

To come out with; to make known. [Obs.] Chaucer.

Pertaining to, or designating, a complex nitrogenous acid (C4H5N3O4) not known in the free state, but obtained, in combination with its salts, by a slow oxidation of uric acid, to which it is related.

s (H. palliatus), and the California, or black, oyster catcher (H. Bachmani) are the best known. -- Oyster crab (Zoöl.) a small crab (Pinnotheres ostreum) which lives as a commensal in the gill cavity of the oyster. -- Oyster dredge, a rake or small dragnet of bringing up oyster from the bottom of the sea. -- Oyster…

herbivorous Tertiary mammals, once supposed to have resembled the tapir in form, but now known to have had a more slender form, with a long neck like that of a llama. [Written also Palæotherium.]

pertaining to, or designating, the older division of geological time during which life is known to have existed, including the Silurian, Devonian, and Carboniferous ages, and also to the life or rocks of those ages. See Chart of Geology.

der of plants (Papaveraceæ) of which the poppy, the celandine, and the bloodroot are well-known examples.

The division of the terms of an equation by a known quantity that is involved in the first term. [Obs.]

the strong chemical reagents. It was formerly regarded as a definite compound, but is now known to be a complex mixture of several higher hydrocarbons of the methane or marsh-gas series; hence, by extension, any substance, whether solid, liquid, or gaseous, of the same chemical series; thus coal gas and kerosene consis…

An order, or suborder, of birds, including more that half of all the known species. It embraces all singing birds (Oscines), together with many other small perching birds.

A well-known high-flavored juicy fruit, containing one or two seeds in a hard almond-like endocarp or stone; also, the tree which bears it (Prunus, or Amygdalus Persica). In the wild stock the fruit is hard and inedible. Guinea, or Sierra Leone, peach, the large edible berry of the Sarcocephalus esculentus, a rubiaceou…