noun Pathology, Biology.
Related formshy·per·plas·tic [hahy-per-plas-tik] /ˌhaɪ pərˈplæs tɪk/, adjective
Examples from the Web for hyperplasia
The inflammation is accompanied by the formation of so-called granules, and at the same time by a hyperplasia of the papillae.
This change consists in hyperplasia of the gland-constituents.
This is a noninflammatory enlargement or a hyperplasia of the thyroid gland.Special Report on Diseases of Cattle|U.S. Department of Agriculture
In some cases the hyperplasia affects chiefly the blood vessels of the thyreoid—vascular goitre.
These may be due in part to hyperplasia and in part to blood-engorgement.