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Cal"lus (?), n. [L. See Callous.]

1. Med. (a)

Same as Callosity

. (b

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.

2. Hort.

The new formation over the end of a cutting, before it puts out rootlets.

 

© Webster 1913.