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callose

[ kal-ohs ]

adjective

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


callose

/ ˈkæləʊz /

noun

  1. a carbohydrate, a polymer of glucose, found in plants, esp in the sieve tubes
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word History and Origins

Origin of callose1

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

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

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callosalcallosity