from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A device for measuring the amount of dew on a surface.
from the GNU version of the Collaborative International Dictionary of English
- n. 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.
from The Century Dictionary and Cyclopedia
- n. An instrument for ascertaining the quantity of dew that condenses on a body which has been exposed to the open air during the night.
From Ancient Greek δρόσος "drosos" (dew) + μέτρον "metron". (Wiktionary)