单词	polyphyletic
释义	polyphyletic /ˌpɒlɪfʌɪˈlɛtɪk / adjective Biology (Of a group of organisms) derived from more than one common evolutionary ancestor or ancestral group and therefore not suitable for placing in the same taxon: the aschelminthes may be a polyphyletic grade... The present study, as well as previous molecular studies, suggest that the oegopsid squids represent a polyphyletic group with uncertain phylogenetic affinities. Loriciferans were originally assigned to the paraphyletic or polyphyletic group called Aschelminthes. The taxonomy of the group is not well resolved, with many family-group taxa considered paraphyletic or polyphyletic, and several subfamilies are unplaced at the family level.
随便看	Washington Monument Washington, Mount Washingtonologist Washington Square washing-up washi tape Washita River washland wash leather wash one's dirty linen (or laundry) in public wash one's hands wash one's hands of wash one's mouth out (with soap and water) washout wash out (or wash someone out) wash over washrag wash, rinse, repeat washroom wash something down wash something out wash something up washstand washtub wash up

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。