protuberance

Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++pro·tu·be·rance /prəˈtjuːbərənt $ -ˈtuː-/ noun [countable] formalSTICK OUT something that sticks out 隆起部分，凸出物 This dinosaur is recognizable by the protuberance on the top of its head. 这种恐龙可以通过头顶的凸起进行识别。 —protuberant adjective

Examples from the Corpus

protuberance• Her sculptures are hybrids of organic and machine forms: cylinders punctuated with round apertures and protuberances.• At the front, inside the thick cotton shirt, was the flat protuberance of the packet.• Each small protuberance seems to be attached to a larger one at some minute place, producing many warts upon warts.• Accurate recordings of nebulae, comets and solar protuberances now extended the iconography of the natural world.• And the amount the tip is moved reveals the height of the protuberance, even if it is only a single atom high.• Perhaps they fitted together with the protuberances of one party fitting into the hollows of the other to make a perfect whole.Origin protuberance (1600-1700) protuberant, from Latin, present participle of protuberare, from tuber “swelling”