To form such hardened tissue.
A shining area on the frons of many species of Tabanomorpha (horse flies and relatives).
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.
The new formation over the end of a cutting, before it puts out rootlets.
A hardened area of the skin (especially on the foot or hand) caused by repeated friction, wear or use.
To grow strong or stronger.
To make strong or stronger; to add strength to; to increase the strength of; to fortify.
To empower; to give moral strength to; to encourage; to enhearten.
To reinforce, to add to, to support (someone or something)
To substantiate; to corroborate (a belief, argument, etc.)
To augment; to improve; to intensify.