Psychrometer

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Psychrometer \Psy*chrom"e*ter\, n. [Gr. psychro`s cold + -meter:
     cf. F. psychrom[`e]tre.]
     An instrument for measuring the tension of the aqueous vapor
     in the atmosphere, being essentially a wet and dry bulb
     hygrometer.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  psychrometer
       n : a hygrometer consisting of a dry-bulb thermometer and a
           wet-bulb thermometer; their difference indicates the
           dryness of the surrounding air