Medical Definition of tactoid
: an elongated particle (as in a sickle cell, myosin, or fibrin) that appears as a spindle-shaped body under a polarizing microscope
Test Your Vocabulary
Words Named After People
-
- Namesake of the leotard, Jules Léotard had what profession?

Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share tactoid