semilethal

noun
semi·le·thal | \ˌse-mē-ˈlē-thəl, 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

Keep scrolling for more

Learn More about semilethal

Share semilethal

Statistics for semilethal

Look-up Popularity

Time Traveler for semilethal

The first known use of semilethal was in 1919

See more words from the same year

Keep scrolling for more

More Definitions for semilethal

semilethal

noun
semi·le·thal | \-ˈlē-thəl \

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

Comments on semilethal

What made you want to look up semilethal? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

exaggeratedly or childishly emotional

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

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!