The Collaborative International Dictionary
cytostatic
cytostatic \cy`to*stat"ic\ (s[imac]`t[-o]*st[a^]t"[i^]k), a. (Biology) Having an inhibitory action on cell growth or cell division.
Wiktionary
cytostatic
a. Tending to inhibit the growth and multiplication of cells. n. Any substance which inhibits cell growth and multiplication.