HUMIDITY • DICTIONARY ONE.COM • Definition of Humidity

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/hjumˈɪdəti/ Listen

noun

Humidity n.

Moisture; dampness; a moderate degree of wetness, which is perceptible to the eye or touch; used especially of the atmosphere, or of anything which has absorbed moisture from the atmosphere, as clothing.

Specifically: The content of water vapor in the air, expressed as a percent of the maximum amount of water vapor that the air can hold at the given temperature; also called relative humidity. The capacity of the air to hold moisture increases with temperature, so if the temperature changes without changing the absolute content of the atmospheric moisture, the relative humidity will also change.

relative humidity Same as humidity (2). Note: In hygrometrical reports (as of the United States Signal Service) complete saturation of the air by water vapor is designated by a relative humidity of 100, and its partial saturation by smaller numbers in direct proportion to the actual content of water vapor.

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Etymology of 'Humidity'

Collaborative International Dictionary of English 0.48

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"Humidity" Quotes from Famous Books

... meaning the humidity contained in the air and, as such, spherically surrounding the earth. I had to make up the word 'hygrosphere' (after hygrometer, etc.) to keep clear the distinction from both atmosphere and hydrosphere. Except for this term in the ...

— Man or Matter • Ernst Lehrs

... sweetness of the liquid. Day after day the end of the stem must be pared as otherwise the sap would cease to exude. A tree will produce daily anywhere from 10 to 30 liters according to the fertility of the soil and the humidity of the atmosphere. The humidity determines the duration of time that the tree produces toddy. This time varies from ...

— The Manbos of Mindano - Memoirs of the National Academy of Sciences, Volume XXIII, First Memoir • John M. Garvan

... growth of wheat or barley, but the best imaginable for that of other kinds of productions. So generally available is the structure of the country for the reservation of water by dams, that a small number of these might be made to retain as much of the surface water as might even impart humidity to the atmosphere. This is because the channels of rivers are in general confined by high banks, within which many, or indeed most of them, might be converted by a few dams into canals. To such great purposes convict labour ought to have been applied, had it been possible ...

— Journal of an Expedition into the Interior of Tropical Australia • Thomas Mitchell

... end of water, month after month! The heat is the same all the year round—not very excessive, seldom 104 deg., but still oppressive and enervating because of the humidity of the air. Yet the voyage was not monotonous. Leaning against the masts and gunwale, or leisurely moving the oars, the soldiers could observe the dolphins leaping in the river, the sudden darts of the alligators as they hunted the fish through the water, or the clumsy ...

— From Pole to Pole - A Book for Young People • Sven Anders Hedin

... Unalaska. The rain seldom pours down here, but falls in a steady drizzle from a hopelessly leaden sky, under which a grey and sodden landscape presents a picture of dreary desolation. But this damp cheerlessness has its advantages, for incessant humidity sheds perpetual verdure over the coast-districts, where the thermometer rarely falls as low as zero Fahr. Winter only sets in here about the 1st of December, and snow has vanished by the end of May, while in the interior lakes and rivers are still in the grip of the ice. ...

— From Paris to New York by Land • Harry de Windt

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