having thickened or hardened spots, as a leaf.
Origin of callose
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for callose
Historical Examples of callose
Callose, hardened; or furnished with callosities or thickened spots.The Elements of Botany
a carbohydrate, a polymer of glucose, found in plants, esp in the sieve tubes
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