semilethal

noun
semi·​le·​thal | \ ˌse-mē-ˈlē-thəl How to pronounce semilethal (audio) , ˌse-ˌmī-, -mi- \

Definition of semilethal

: a mutation that in the homozygous condition produces more than 50 percent mortality but not complete mortality

Other Words from semilethal

semilethal adjective

First Known Use of semilethal

1919, in the meaning defined above

Learn More About semilethal

Time Traveler for semilethal

Time Traveler

The first known use of semilethal was in 1919

See more words from the same year

Dictionary Entries Near semilethal

semilegendary

semilethal

semiliquid

See More Nearby Entries 

Statistics for semilethal

Cite this Entry

“Semilethal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/semilethal. Accessed 10 Aug. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for semilethal

semilethal

noun
semi·​le·​thal | \ -ˈlē-thəl How to pronounce semilethal (audio) \

Medical Definition of semilethal

: a mutation that in the homozygous condition produces more than 50 percent mortality but not complete mortality

Other Words from semilethal

semilethal adjective

WORD OF THE DAY

Test Your Vocabulary

Words Named After People

  • name tags
  • Namesake of the leotard, Jules Léotard had what profession?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!