VACUOLE n.
A small air cell, or globular space, in the interior of organic cells, either containing air, or a pellucid watery liquid, or some special chemical secretions of the cell protoplasm. Contractile vacuole. (Zoöl.) See under Contractile, and see Illusts. of Infusoria, and Lobosa. -- Food vacuole. (Zoöl.) See under Food,…
VAMPIRE n. 4 definitions
Either one of two or more species of South American blood- sucking bats belonging to the genera Desmodus and Diphylla. These bats are destitute of molar teeth, but have strong, sharp cutting incisors with which they make punctured wounds from which they suck the blood of horses, cattle, and other animals, as well as ma…
VARNISH n. 5 definitions
ile liquid, laid on work with a brush, or otherwise. When applied the varnish soon dries, either by evaporation or chemical action, and the resinous part forms thus a smooth, hard surface, with a beautiful gloss, capable of resisting, to a greater or less degree, the influences of air and moisture.
VELOCITY n. 2 definitions
f time. -- Variable velocity, velocity in which the space described varies from instant, either increasing or decreasing; -- in the former case called accelerated velocity, in the latter, retarded velocity; the acceleration or retardation itself being also either uniform or variable. -- Virtual velocity. See under Vi…
VENETIAN a. 2 definitions
to Venice in Italy. Venetian blind, a blind for windows, doors, etc., made of thin slats, either fixed at a certain angle in the shutter, or movable, and in the latter case so disposed as to overlap each other when close, and to show a series of open spaces for the admission of air and light when in other positions. -…
VERDITER n. 2 definitions
Either one of two pigments (called blue verditer, and green verditer) which are made by treating copper nitrate with calcium carbonate (in the form of lime, whiting, chalk, etc.) They consist of hydrated copper carbonates analogous to the minerals azurite and malachite. Verditer blue, a pale greenish blue color, like t…
VERMILION n. 3 definitions
A bright red pigment consisting of mercuric sulphide, obtained either from the mineral cinnabar or artificially. It has a fine red color, and is much used in coloring sealing wax, in printing, etc.
VERNER'S LAW n.
d and produced g, d, b, if the accent was originally on a different syllable. Similarly s either remained unchanged, or it became z and later r. Example: Skt. sapta (accent on ultima), Gr. 'e`pta, Gothic sibun (seven). Examples in English are dead by the side of death, to rise and to rear.
VERNIER n.
ted that a certain convenient number of its divisions are just equal to a certain number, either one less or one more, of the divisions of the instrument, so that parts of a division are determined by observing what line on the vernier coincides with a line on the instrument. Vernier calipers, Vernier gauge, a gauge wi…
VIGOROUS a. 2 definitions
Exhibiting strength, either of body or mind; powerful; strong; forcible; energetic; as, vigorous exertions; a vigorous prosecution of a war. The beginnings of confederacies have been always vigorous and successful. Davenant. -- Vig"or*ous*ly, adv. -- Vig"or*ous*ness, n.