from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Botany Having a white, powdery covering or bloom.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Having a very fine whitish powder on a surface.
from the GNU version of the Collaborative International Dictionary of English
- adj. Frosty; covered with fine scales, hairs, dust, bloom, or the like, so as to give the appearance of frost.
from The Century Dictionary and Cyclopedia
- Covered with a bloom or powder so as to appear as if frosted: said of some plant-surfaces dusted with a fine granular secretion.
Latin pruīnōsus, frosty, from pruīna, hoarfrost; see preus- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin pruīnōsus, from pruīna (Wiktionary)