| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024cal•lus /ˈkæləs/USA pronunciation n. [countable], pl. -lus•es. - Pathology, Physiologya hardened or thickened part of the skin, caused by rubbing.
WordReference Random House Unabridged Dictionary of American English © 2024cal•lus (kal′əs),USA pronunciation n., pl. -lus•es, v., -lused, -lus•ing. n. - Pathology, Physiology
- 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.
- Also, callose. [Bot.]
- Botanythe tissue that forms over the wounds of plants, protecting the inner tissues and causing healing.
- Botanya deposit on the perforated area of a sieve tube.
- Botany(in grasses) a tough swelling at the base of a lemma or palea.
v.i. - to form a callus.
v.t. - to produce a callus or calluses on:Heavy work callused his hands.
- Latin callus, masculine variant of callum; see callous
- 1555–65
Collins Concise English Dictionary © HarperCollins Publishers:: callus /ˈkæləs/ n ( pl -luses)
Also called: callosity an area of skin that is hard or thick, esp on the palm of the hand or sole of the foot, as from continual friction or pressure- an area of bony tissue formed during the healing of a fractured bone
- a mass of hard protective tissue produced in woody plants at the site of an injury
- a mass of undifferentiated cells produced as the first stage in tissue culture
Etymology: 16th Century: from Latin, variant of callum hardened skin |