单词 crenulation 释义 crenulation Zool. and Bot.|krnjulen|[f. as prec. + -ation.]A crenulated formation; a minute rounded marginal tooth or crenation.1846Dana Zooph. (1848) 391 The lamell are marginal crenulations.1881R. B. Watson in Jrnl. Linn. Soc. XV....