tri·​chi·​na | \ tri-ˈkī-nə How to pronounce trichina (audio) \
plural trichinae\ tri-​ˈkī-​(ˌ)nē How to pronounce trichinae (audio) \ also trichinas

Definition of trichina

: a small slender nematode worm (Trichinella spiralis) that is a parasite of flesh-eating mammals (such as humans and swine) with larvae that migrate from the intestines to striated muscles where they become encysted

Other Words from trichina

trichinal \ tri-​ˈkī-​nᵊl How to pronounce trichinal (audio) \ adjective

First Known Use of trichina

1835, in the meaning defined above

History and Etymology for trichina

New Latin, from Greek trichinos made of hair, from trich-, thrix hair

Keep scrolling for more

Learn More about trichina

Statistics for trichina

Look-up Popularity

Time Traveler for trichina

The first known use of trichina was in 1835

See more words from the same year

Keep scrolling for more

More Definitions for trichina


tri·​chi·​na | \ tri-ˈkī-nə How to pronounce trichina (audio) \
plural trichinae\ -​(ˌ)nē How to pronounce trichinae (audio) \ also trichinas

Medical Definition of trichina

 (Entry 1 of 2)

: a small slender nematode worm of the genus Trichinella (T. spiralis) that as an adult is a short-lived parasite of the intestines of a flesh-eating mammal (as a human being, rat, or pig) where it produces immense numbers of larvae which migrate to the striated muscles either directly or through the blood, establish themselves in or between the muscle fibers where they become encysted and may persist for years, and if consumed by a new host in raw or insufficiently cooked meat are liberated by the digestive processes and rapidly become adult to initiate a new parasitic cycle — see trichinosis



Medical Definition of Trichina (Entry 2 of 2)

taxonomic synonym of trichinella

More from Merriam-Webster on trichina Encyclopedia article about trichina

Comments on trichina

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


ancient or antiquated

Get Word of the Day daily email!

Test Your Vocabulary

Word Puzzles

  • alt 57589b2b4c6a3
  • Which answer pairs best with each of the following words? living, estate, club, music, road, mile
Spell It

Can you spell these 10 commonly misspelled words?


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

Love words? Need even more definitions?

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