单词	cephalon
释义	cephalon /ˈsɛfəlɒn / /ˈkɛfəlɒn/ noun Zoology (In some arthropods, especially trilobites) the region of the head, composed of fused segments.This problem is reflected in the ongoing uncertainty about the number of biramous appendages in the trilobite cephalon.... This specimen cannot be specifically identified because it lacks the cephalon and first thoracic segment. Members of the Agnostina have only two segments between the cephalon and pygidium, and never have cephalic sutures. Origin Late 19th century: from Greek kephalē 'head'.
随便看	hand-habend hand-hammer hand-having handheld handheld device hand hoe hand hoeing handhold hand-holding handhole handhorn hand-hot handi handicap handicap mark handicapped handicapper handicraft handicraftman handicraftsman handicraftswoman handicuff handigrip handily hand-in

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。