relative humidity

The ratio of the amount of water vapor in the air at a specific temperature to the maximum amount that the air could hold at that temperature, expressed as a percentage.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

relative humidity

(General Physics) the mass of water vapour present in the air expressed as a percentage of the mass that would be present in an equal volume of saturated air at the same temperature. Compare absolute humidity

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

rel′ative humid′ity

the amount of water vapor in the air, expressed as a percentage of the maximum amount that the air could hold at the given temperature.

[1810–20]

rel·a·tive humidity

(rĕl′ə-tĭv)

The ratio of the actual amount of water vapor present in the air at a given temperature to the maximum amount that the air could hold at that temperature. Relative humidity is expressed as a percentage. Compare absolute humidity.

The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

relative humidity

A percentage scale to measure the level of humidity in the atmosphere: from 0% which indicates the air is absolutely dry to 100% which indicates the air is saturated.

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Noun

relative humidity - the ratio of the amount of water in the air at a give temperature to the maximum amount it could hold at that temperature; expressed as a percentage

ratio - the relative magnitudes of two quantities (usually expressed as a quotient)

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References in periodicals archive

Relative humidity will remain in the 85 to 90 per cent range along the coast particularly in Dubai, Abu Dhabi and Sharjah, figures from the National Centre of Meteorology show.

UAE weather: Sticky, dusty weather ahead

The mean relative humidity for March was 60% whereas the mean maximum relative humidity was 76% and the mean minimum relative humidity was 41%.

March was slightly cooler than long-term normal

The dehumidified air is then heated, which lowers the air's relative humidity. We now have drying air that has a very low dewpoint and an extremely low relative humidity (Fig.

Why Drying Polyolefins Might Be Right for Your Process

The relative humidity will increase during the night and early morning over some coastal and internal areas, NCM added.

Weather: Temperature to decline further today in UAE

We observed positive relationship between the abundance of whitefly and percent parasitism; while both had a strong positive relationship with percent relative humidity and only a positive relationship with the average temperature.

Spatial Field Survey of Cotton Whitefly and its Pupal Parasitism in Relation to Temperature and Humidity in Southern Pakistan

The chemical shrinkage depends on the hydration degree of the material, and the drying shrinkage depends on the pore structure and the internal relative humidity of the hardened slurry, while the autogenous shrinkage is determined by the hydration degree, the pore structure, and the internal relative humidity.

The Modeling Research on the Early-Age Shrinkage of UHPFRC in Different Curing Conditions

Air at 25[degree]C, for example, with a relative humidity of 100 percent, would have an absolute humidity of 23g/[m.sup.3] (A).

Mo's corner

For example, at 70F and 75 percent relative humidity, the moisture level will reach 14 percent.

Why determining moisture content in wood is critical

Relative humidity levels near saturation (100%) can increase the rot incidence (SCHWARZ, 1994) and berry cracking.

Relative humidity during cold storage on Postharvest quality of 'Niagara Rosada' table grapes/Umidade relativa durante o armazenamento refrigerado sobre a qualidade pos-colheita de uvas de mesa 'Niagara Rosada'

Q-Lab Corporation's laboratories in Flomestead, Florida and Saarbrucken, Germany offer contract testing services for automotive corrosion tests requiring relative humidity control.

Q-LAB offers contract testing services for automotive corrosion tests