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

infusorian

play
noun in·fu·so·ri·an \-ē-ən\

Definition of infusorian

  1. :  any of a heterogeneous group of minute organisms found especially in water with decomposing organic matter; especially :  a ciliated protozoan

infusorian adjective


Origin of infusorian

ultimately from Latin infusus


First Known Use: 1859


Medical Dictionary

infusorian

play play
noun in·fu·so·ri·an \-ē-ən\

Medical Definition of infusorian

  1. :  any of a heterogeneous group of minute organisms found especially in water with decomposing organic matter; especially :  a ciliated protozoan

infusorian adjective



Learn More about infusorian

  1. Medical Dictionary: Definition of "infusorian"


Seen and Heard

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

WORD OF THE DAY

a smart aleck

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image567572573

Which of these is a synonym of unctuous?

maudlin oily prompt angry
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