vapour pressure — ▪ physics pressure exerted by a vapour when the vapour is in equilibrium with the liquid or solid form, or both, of the same substance i.e., when conditions are such that the substance can exist in both or in all three phases. Vapour… … Universalium
Vapour Pressure Deficit — Vapour Pressure Deficit, or VPD , is the difference (deficit) between the amount of moisture in the air and how much moisture the air can hold when it is saturated. Once air becomes saturated water will condense out to form clouds, dew or films… … Wikipedia
vapour — /ˈveɪpə / (say vaypuh) noun 1. a visible exhalation, as fog, mist, condensed steam, smoke, etc. 2. a substance in the gaseous state (sometimes restricted to substances in the gaseous state when below their critical points); a gas. 3. matter… …
vapour — n. & v. (US vapor) n. 1 moisture or another substance diffused or suspended in air, e.g. mist or smoke. 2 Physics a gaseous form of a normally liquid or solid substance (cf. GAS). 3 a medicinal agent for inhaling. 4 (in pl.) archaic a state of… … Useful english dictionary
State of matter — A state of matter (or physical state, or form of matter) has physical properties which are qualitatively different from other states of matter.Traditionally, three states of matter were recognized: solid, which maintains a fixed volume and shape; … Wikipedia
vapour — Vapor Va por, n. [OE. vapour, OF. vapour, vapor, vapeur, F. vapeur, L. vapor; probably for cvapor, and akin to Gr. ? smoke, ? to breathe forth, Lith. kvepti to breathe, smell, Russ. kopote fine soot. Cf. {Vapid}.] [Written also {vapour}.] [1913… … The Collaborative International Dictionary of English
vapour — 1. noun /ˈveɪpə/ a) The gas phase component of a liquid or solid. b) The gaseous state of a substance that is normally a solid or liquid. 2. verb /ˈveɪpə/ a) To become vapour; to be emitted or circu … Wiktionary
state change — noun a change from one state (solid or liquid or gas) to another without a change in chemical composition • Syn: ↑phase change, ↑phase transition, ↑physical change • Hypernyms: ↑natural process, ↑natural action, ↑action, ↑ … Useful english dictionary
vapor state — garinė būsena statusas T sritis fizika atitikmenys: angl. vapor state; vapour state vok. dampfförmiger Zustand, m; Dampfzustand, m rus. парообразное состояние, n pranc. état de vapeur, m … Fizikos terminų žodynas
hydrologic cycle — the natural sequence through which water passes into the atmosphere as water vapor, precipitates to earth in liquid or solid form, and ultimately returns to the atmosphere through evaporation. [1955 60; HYDROLOG(Y) + IC] * * * Cycle that involves … Universalium