callus
/ˈkæləs/ noun, verb
Forms calluses calli callusing callused
- noun A hardened area of the skin (especially on the foot or hand) caused by repeated friction, wear or use.
- noun The material of repair in fractures of bone; a substance exuded at the site of fracture, which is at first soft or cartilaginous in consistency, but is ultimately converted into true bone and unites the fragments into a single piece.
- noun (botany) The new formation over the end of a cutting, before it puts out rootlets.
- noun (botany) In orchids, a fleshy outgrowth from the labellum.
- noun (botany) In grasses, a hardened extension from the base of a floret, which may or may not elongate and is often covered in hairs or bristles.
- noun (entomology) A shining area on the frons of many species of Tabanomorpha (horse flies and relatives).
- verb (intransitive) To form such hardened tissue.
Synonyms
Etymology
Borrowed from Latin callum (“hard skin”). Displaced Old English wearr.
Webster’s 1913
- noun (a) Same as Callosity. (b
- noun The material of repair in fractures of bone; a substance exuded at the site of fracture, which is at first soft or cartilaginous in consistence, but is ultimately converted into true bone and unites the fragments into a single piece.
Etymology [L. See Callous.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “callus”, CC BY-SA 4.0. Details