protuberation


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pro·tu·ber·ate

 (prō-to͞o′bə-rāt′, -tyo͞o′-, prə-)
intr.v. pro·tu·ber·at·ed, pro·tu·ber·at·ing, pro·tu·ber·ates
To swell or bulge.

[Late Latin prōtūberāre, prōtūberāt- : Latin prō-, forth; see pro-1 + Latin tūber, a swelling; see teuə- in Indo-European roots.]

pro·tu′ber·a′tion n.

protuberation

(prəˌtjuːbəˈreɪʃən)
n
another word for protuberance