Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

micronucleus

play
noun mi·cro·nu·cle·us \ˌmī-krō-ˈnü-klē-əs, -ˈnyü-\

Definition of micronucleus

  1. :  a minute nucleus; specifically :  one that is primarily concerned with reproductive and genetic functions in most ciliated protozoans



Origin of micronucleus

New Latin


First Known Use: 1887


Medical Dictionary

micronucleus

play
noun mi·cro·nu·cle·us \ˌmī-krō-ˈn(y)ü-klē-əs\

Medical Definition of micronucleus

  1. :  a minute nucleus; specifically :  one regarded as primarily concerned with reproductive and genetic functions in most ciliated protozoans—compare macronucleus




Learn More about micronucleus


Seen and Heard

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

WORD OF THE DAY

a timid, meek, or unassertive person

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alt-5746713d76276

Which of these is a synonym of nonplus?

disapprove soothe reduce perplex
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ