Main Entry: hy·per·pla·sia

Pronunciation: \ˌhī-pər-ˈplā-zh(ē-)ə\

Function: noun

: an abnormal or unusual increase in the elements composing a part (as cells composing a tissue)—see benign prostatic hyperplasia, congenital adrenal hyperplasia

—hy·per·plas·tic \-ˈplas-tik\ adjective

—hy·per·plas·ti·cal·ly \-ti-k(ə-)lē\ adverb