from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A substance used to kill or inhibit the growth of algae.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A substance that kills, or inhibits the growth of, algae.
from The Century Dictionary and Cyclopedia
- n. Any substance, as copper sulphate, which has the property of destroying algæ.
alg(a) + -cide.(American Heritage® Dictionary of the English Language, Fourth Edition)