n.
Pronunciation: ˌ h ī -p ə r- ' pl ā -zh( ē -) ə
Function: noun
Etymology: New Latin
Date: 1861
: an abnormal or unusual increase in the elements composing a part (as cells composing a tissue) ― compare BENIGN PROSTATIC HYPERPLASIA
– hy · per · plas · tic \ - ' plas-tik \ adjective