semilethal

noun

semi·​le·​thal ˌse-mē-ˈlē-thəl How to pronounce semilethal (audio)
ˌse-ˌmī-,
-mi-
: a mutation that in the homozygous condition produces more than 50 percent mortality but not complete mortality
semilethal adjective

Word History

First Known Use

1919, in the meaning defined above

Time Traveler
The first known use of semilethal was in 1919

Dictionary Entries Near semilethal

Cite this Entry

“Semilethal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/semilethal. Accessed 18 Apr. 2024.

Medical Definition

semilethal

noun
semi·​le·​thal -ˈlē-thəl How to pronounce semilethal (audio)
: a mutation that in the homozygous condition produces more than 50 percent mortality but not complete mortality
semilethal adjective
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