hygrometern.
/hʌɪˈɡrɒmɪtə/ An instrument for measuring the humidity of the air or a gas, or the ratio of the amount of moisture actually present in it to that required for saturation. (Formerly often applied to a contrivance for simply indicating the comparative humidity, to which the name hygroscope n. has also been given.)
ΘΚΠ
the world > matter > liquid > moisture or humidity > [noun] > instrument for measuring humidity
hygrometer1670
weather-cord1747
psychrometer1838
moisture meter1935
the world > the earth > weather and the atmosphere > weather > study or science of weather > meteorological instruments > [noun] > hygroscope > hygrometer
hygrometer1670
notiometer1720
1670 E. Tonge in Philos. Trans. (Royal Soc.) 5 1199 I want a good Thermometer, Barometer, and Hygro-meter.
1725 R. Bradley Chomel's Dictionaire Œconomique at Oat Wild..Oats is distinguished by a Beard that is made use of to make Hygrometers.
1729 S. Switzer Introd. Gen. Syst. Hydrostaticks & Hydraulicks 207 The Hygrometer, a Specimen of which we have lately had in the Toy wherein the Man comes out..in wet Weather and the Woman in dry.
1791 E. Darwin Bot. Garden: Pt. I i. Notes 172 Mr. Saussure observed in placing his hygrometer in a receiver of an air-pump that..the hair of his hygrometer contracted.
1839 C. Darwin in R. Fitzroy & C. Darwin Narr. Surv. Voy. H.M.S. Adventure & Beagle III. i. 4 The hygrometer gave a difference of 29·6 degrees, between the temperature of the air, and the point at which dew was precipitated.
This entry has not yet been fully updated (first published 1899; most recently modified version published online December 2021).
<
n.1670