单词	umbilicate
释义	umbilicate /ʌmˈbɪlɪkət / adjective Botany & Zoology 1(Especially of the cap of a fungus) having a central depression. 1.1(Of a shell) having an umbilicus.The dominant taxa at that time (modal geometries C and D) had compressed, moderately to openly umbilicate shells with slowly expanding whorls, morphologies poorly exploited by Permian goniatitids.... Modal geometries C and D appear to represent the tendency for these pioneers, i.e., slowly expanding, moderately to openly umbilicate, compressed shells, typified by Otoceras and Ophiceras. By contrast, a narrowly umbilicate and thin shell possesses slender and dense ornamentation.
随便看	São Vincente säter Sèvres Sémillon Sûreté Sûreté nationale t 't -t T-1 T & A t/a ta taal tab tabac tabanca tabard tabaret Tabasco Tabasco sauce tabbed tabbouleh tabby tabby cat

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。