Dictionary.com
definitions

algicide

[al-juh-sahyd]
noun
  1. a substance or preparation for killing algae.

Origin of algicide

First recorded in 1900–05; alg(ae) + -i- + -cide
Related formsal·gi·cid·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for algicide

algicide

noun
  1. any substance that kills algae
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
algicide in Medicine

algicide

[ăl′jĭ-sīd′]
n.
  1. A substance that kills or inhibits the growth of algae.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.