Difference between revisions of "callus"
From ZooTerms (Dictionary of Invertebrate Zoology)
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Latest revision as of 23:39, 13 September 2013
callus (noun; plural calluses, calli; Latin callus, hard skin): 1. An unusually hardened or thickened area; a rounded swelling.2. (Arthropoda: Insecta) In brachycerous Diptera, a knoblike swelling on the cuticle.
3. (Mollusca: Gastropoda) A shelly substance (inductura) on the parietal region or extending from the inner lip over base or into the umbilicus of the shell.