What it means
The beginning of words that count three of something. The tricuspid valvetry-KUS-pid VALVThe heart valve between the right atrium and the right ventricle.tri- threecusp point, flapFull entry has three flaps, a trimester is a three-month part of pregnancy, triglycerides have three fatty acids, and triiodothyronine (T3tee-THREETriiodothyronine: the more active of the two main thyroid hormones, or the blood test that measures it.Full entry ) is a hormone with three iodine atoms.
Remember it
A tricycle has three wheels.
Related terms
mono-
A word beginning that means one or single.
di-
A word beginning that means two or twice.
tricuspid valve
The heart valve between the right atrium and the right ventricle.
T3
Triiodothyronine: the more active of the two main thyroid hormones, or the blood test that measures it.