from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An instrument for measuring the intensity of blue colour.
from the GNU version of the Collaborative International Dictionary of English
- n. An instrument for measuring degress of blueness.
from The Century Dictionary and Cyclopedia
- n. A meteorological instrument contrived by Saussure for estimating or measuring degrees of blueness, as in the sky.
Ancient Greek (Wiktionary)