- (bot.) Any of the wartlike growths on the roots of some plants.
- (anat.) A knoblike elevation, as on a bone.
- (med.) Any abnormal hard nodule or swelling; specif., the typical nodular lesion of tuberculosis.
Other Word Forms
Origin of tubercle
- Latin tūberculum diminutive of tūber lump tuber
From American Heritage Dictionary of the English Language, 5th Edition