callose

American  

[kal-ohs] / ˈkæl oʊs /

adjective

1. having thickened or hardened spots, as a leaf.

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noun

1. callus.

callose British  

/ ˈkæləʊz /

noun

1. a carbohydrate, a polymer of glucose, found in plants, esp in the sieve tubes

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Etymology

Origin of callose

1860–65; < Latin callōsus; callous, -ose ¹

Example Sentences

While the fundamental constituent is a cellulose in many Mucorini and other Phycomycetes, in others bodies like pectose, callose, &c., commonly occur, and Wisselingh’s researches show that chitin, a gluco-proteid common in animals, forms the main constituent in many cases, and is probably deposited directly as such, though, like the other substances, it may be mixed with cellulose.

From Project Gutenberg

Callose, hardened; or furnished with callosities or thickened spots.

From Project Gutenberg