humidity

Stedman's Medical Dictionary: A Practical Medical Dictionary · 1920 · p. 16

(hu-mid'i-ti) [L. humid us, moist.] Moisture, dampne , ab's olute h., the amount of vapor in the atmosphere expre ed in grains per cubic foot, rel'ative h., the percentage of moisture in the air, the amount nece ary for saturation, or the greatest amount which the atmosphere can contain in the form of vapor, being taken as 100.