noun, plural cal·lus·es.
- a hardened or thickened part of the skin; a callosity.
- a new growth of osseous matter at the ends of a fractured bone, serving to unite them.
- the tissue that forms over the wounds of plants, protecting the inner tissues and causing healing.
- a deposit on the perforated area of a sieve tube.
- (in grasses) a tough swelling at the base of a lemma or palea.
verb (used without object), cal·lused, cal·lus·ing.
verb (used with object), cal·lused, cal·lus·ing.
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Origin of callus
OTHER WORDS FROM callusun·cal·lused, adjective
WORDS THAT MAY BE CONFUSED WITH calluscallous, callus
Example sentences from the Web for callus
His fingertips were callused, worked rough with exertion well beyond the normal call of duty.Down and Out in the Magic Kingdom|Cory Doctorow
He pressed the callused palm of his hand against her cheek and said something, then turned and quickly walked out of the room.The Saracen: Land of the Infidel|Robert Shea
These callused rapidly and were planted immediately in the nursery.Northern Nut Growers Association Report of the Proceedings at the Forty-Second Annual Meeting|Northern Nut Growers Association
It may even occur that the whole inner bark around the trunk is of a callused nature, without any open cankers showing at all.
In this manner, cuttings which have been obtained in winter or spring can be callused before planting time.The Nursery Book|Liberty Hyde Bailey
British Dictionary definitions for callus
noun plural -luses
- a mass of hard protective tissue produced in woody plants at the site of an injury
- an accumulation of callose in the sieve tubes