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A low, oven-shaped mound, common in volcanic regions, and emitting smoke and vapors from its sides and summit. Humboldt.

a humidair or atmosphere; somewhat wet or watery; as, humid earth; consisting of water or vapor. Evening cloud, or humid bow. Milton.

A meteor or atmospheric phenomenon dependent upon the vapor of water; -- in the pl., a general term for the whole aqueous phenomena of the atmosphere, as rain, snow, hail, etc. Nichol.

The aqueous vapor of the entire atmosphere.

ether and a thermometer. Ether being poured on the muslin, the black ball, cooled by the evaporation of the ether within, is soon covered with dew; at this moment, the inclosed thermometer gives the dew-point, and this, compared with the reading of one in the air, determines the humidity.

ially, as by the production of a low temperature through the sudden expansion of a gas or vapor, or the rapid evaporation of a volatile liquid. -- Ice master. See Ice pilot (below). -- Ice pack, an irregular mass of broken and drifting ice. -- Ice paper, a transparent film of gelatin for copying or reproducing; papi…

specially, in pharmacy, to thicken (a liquid) by the mixture of another substance, or by evaporating the thinner parts. Acids dissolve or attenuate; alkalies precipitate or incrassate. Sir I. Newton. Liquors which time hath incrassated into jellies. Sir T. Browne.

An apparatus for inhaling any vapor or volatile substance, as ether or chloroform, for medicinal purposes.

To thicken or bring to greater consistence, as fluids by evaporation.

The act or the process of inspissating, or thickening a fluid substance, as by evaporation; also, the state of being so thickened.

proper, using fixed gases, as coal, blast-furnace, or producer gas; (2) engines using the vapor of a volatile fluid, as the typical gasoline (petrol) engine;

resolved into others which are more simple; ice is convertible into water, and water into vapor; men are more easily drawn than forced into compliance; we may reduce many distinct substances into one mass; men are led by evidence into belief of truth, and are often enticed into the commission of crimes'into; she burst…

ke odor. Symbol I. Atomic weight 126.5. If heated, iodine volatilizes in beautiful violet vapors.

Raw palm sugar, made in the East Indies by evaporating the fresh juice of several kinds of palm trees, but specifically that of the palmyra (Borassus flabelliformis). [Written also jagghery.]

milk or milk sugar; a crystalline sugar present in milk, and separable from the whey by evaporation and crystallization. It has a slightly sweet taste, is dextrorotary, and is much less soluble in water than either cane sugar or glucose. Formerly called lactin.

escent. Æolipile lamp, a hollow ball of copper containing alcohol which is converted into vapor by a lamp beneath, so as to make a powerful blowpipe flame when the vapor is ignited. Weale. -- Arc lamp (Elec.), a form of lamp in which the voltaic arc is used as the source of light. -- Dëbereiner's lamp, an apparatus f…

d in a body while producing some change in it other than rise of temperature, as fusion, evaporation, or expansion, the quantity being constant for each particular body and for each species of change. -- Latent period. (a) (Med.) The regular time in which a disease is supposed to be existing without manifesting itself…

, according to which, under similar conditions of temperature and pressure, all gases and vapors contain in the same volume the same number of ultimate molecules; -- so named after Avogadro, an Italian scientist. Sometimes called Ampère's law. -- Bode's law (Astron.), an approximative empirical expression of the dista…

ot copious or heavy; not dense; not inconsiderable; as, a light rain; a light snow; light vapors.

The act, process, or method, of reducing a gas or vapor to a liquid by cold or pressure; as, the liquefaction of oxygen or hydrogen.