algicidal


al·gi·cide

A0196000 (ăl′jĭ-sīd′)n. A substance used to kill or inhibit the growth of algae.
[alg(a) + -cide.]
al′gi·cid′al (-sīd′l) adj.

algicidal

(ˌældʒɪˈsaɪdəl) adjkilling or preventing the growth of algae