Thesaurus

half-life

noun

Synonyms of half-life

as in time, duration

Synonyms & Near Synonyms for half-life

See the Dictionary Definition 

Learn More About half-life

Time Traveler for half-life

Time Traveler

The first known use of half-life was in 1907

See more words from the same year

Thesaurus Entries Near half-life

halfheartedness

half-life

half-lifes

See More Nearby Entries 

Cite this Entry

“Half-life.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/half-life. Accessed 17 May. 2022.

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

More from Merriam-Webster on half-life

Nglish: Translation of half-life for Spanish Speakers

Britannica.com: Encyclopedia article about half-life

WORD OF THE DAY

Test Your Vocabulary

Name That Food

  • a-light
  • Name these cookies!
Name That Thing

Test your visual vocabulary with our 10-question challenge!

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!