Medical Terminology / Unit 3 MedTerm 0155 short lesson, about 20 seconds
tri-: Three
Captions available
The idea
The prefix tri means three.
In practice
The tricuspid valve has three cusps.
Where people slip
Number prefixes count structures, not measurements or doses.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
Unlocks
- Nothing yet depends on this.
Something wrong in this lesson? Flag it · Sources for Medical Terminology