protuberancen.
英 prə'tjuːb(ə)r(ə)ns | 美 pro'tubərəns
中文n. 突起，突出；结节，瘤
词根词源
protuberance (n.)1640s, from Late Latin protuberantem (nominative protuberans), present participle of protuberare "to swell, bulge, grow forth," from Latin pro- "forward" (see pro-) + tuber "lump, swelling" (see tuber).
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