from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Botany A complex branched carbohydrate commonly associated with sieve areas of sieve elements.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A plant polysaccharide comprising glucose residues linked together through β-1,3-linkages, produced chiefly in response to wounding and infection.
from the GNU version of the Collaborative International Dictionary of English
- adj. Furnished with protuberant or hardened spots.
from The Century Dictionary and Cyclopedia
- In botany and zoology, having callosities or hard spots; callous; hardened.
From Latin callōsus, callous; see callous.(American Heritage® Dictionary of the English Language, Fourth Edition)