\Dro*som"e*ter\, n. [Gr. ? dew + -meter: cf. F.
drosom['e]tre.] (Meteorol.)
An instrument for measuring the quantity of dew on the
surface of a body in the open air. It consists of a balance,
having a plate at one end to receive the dew, and at the
other a weight protected from the deposit of dew.