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 place one's pieces actively.
To progress through a sequence of stages.
To bring out images latent in photographic film.
To advance; to further; to promote the growth of.
To acquire something usually over a period of time.
To change with a specific direction, progress.
To create.
To cause a ball to become more open and available to be played on later. Usually by moving it away from the cushion, or by opening a pack.
To change the form of (an algebraic expression, etc.) by executing certain indicated operations without changing the value.