anatomical projection tubercle UBERON:0005813 BTO:0002173 tuber Wikipedia:Tubercle_(anatomy) FMA:75429 A round nodule, small eminence, or warty outgrowth on an anatomical surface, such as bones, skin, or within the lungs (in the case of tuberculosis). They are also found on the leading edge of Humpback Whale's flippers, improving fluid flow over the flipper's surface[WP]. AAO:0010605