algicide

noun

al·​gi·​cide ˈal-jə-ˌsīd How to pronounce algicide (audio)
variants or algaecide
: an agent used to kill algae
algicidal
ˌal-jə-ˈsī-dᵊl How to pronounce algicide (audio)
adjective

Word History

First Known Use

1900, in the meaning defined above

Time Traveler
The first known use of algicide was in 1900

Rhymes for algicide

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Browse Nearby Words

algic acid
algicide
algid
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Cite this Entry

“Algicide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/algicide. Accessed 7 Jul. 2026.

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Medical Definition

algicide

noun
al·​gi·​cide
variants or algaecide
ˈal-jə-ˌsīd How to pronounce algicide (audio)
: an agent used to kill algae
algicidal
ˌal-jə-ˈsīd-ᵊl How to pronounce algicide (audio)
adjective
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