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callose

 - 8 dictionary results

cal⋅lose

  [kal-ohs]
Use callose in a Sentence
–adjective
1. having thickened or hardened spots, as a leaf.
–noun
2. callus (def. 2).
Origin:
1860–65; < L callōsus; see callous, -ose 1

cal⋅lus

  [kal-uhs] noun, plural -lus⋅es, verb, -lused, -lus⋅ing.
–noun
1. Pathology, Physiology.
a. a hardened or thickened part of the skin; a callosity.
b. a new growth of osseous matter at the ends of a fractured bone, serving to unite them.
2. Also, callose. Botany.
a. the tissue that forms over the wounds of plants, protecting the inner tissues and causing healing.
b. a deposit on the perforated area of a sieve tube.
c. (in grasses) a tough swelling at the base of a lemma or palea.
–verb (used without object)
3. to form a callus.
–verb (used with object)
4. to produce a callus or calluses on: Heavy work callused his hands.
Origin:
1555–65; < L callus, masc. var. of callum; see callous
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To callose
cal·lose   (kāl'ōs')   
n.   Botany
A complex branched carbohydrate commonly associated with sieve areas of sieve elements.

[From Latin callōsus, callous; see callous.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

callus  (n.)
1563, from L., var. of callum "hard skin," related to callere "be hard," and cognate with Skt. kalika "bud," O.Ir. calath "hard."
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: cal·lose
Pronunciation: 'kal-"Os, -"Oz
Function: noun
: a carbohydrate component of plant cell walls

Main Entry: cal·lus
Pronunciation: 'kal-&s
Function: noun
1 : a thickening of or a hard thickened area on skin
2 : amass of exudate and connective tissue that forms around a break in a bone and is converted into bone in the healing of the break
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

callus cal·lus (kāl'əs)
n. pl. cal·lus·es

  1. See callosity.

  2. The hard bony tissue that develops around the ends of a fractured bone during healing.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
callus   (kāl'əs)  Pronunciation Key 

  1. An area of the skin that has become hardened and thick, usually because of prolonged pressure or rubbing.

  2. The hard bony tissue that develops around the ends of a fractured bone during healing.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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