词根词缀：cephalo-, cephal-; -cephalic, -cephalism, -cephalous, -cephalus; -cephaly
【来源及含义】Greek: head
【相关描述】Sometimes these "head" elements are also written as: kephalo-, kephal-, etc.
【同源单词】abrachiocephalia, abrachiocephalus, acanthocephalid, acepalothoracia, acephalia, acephaline
词根词缀：mega-, meg-
【来源及含义】Greek: large, great, big, powerful
【相关描述】When measuring in the metric [decimal] system, it means a million [U.S.] or millionfold [U.K.]: 106 [1 000 000]. The metric symbol for mega- is M.
【相关词根词缀】 Related "big, large, great" words: grand-; macro-; magni-; major-; maxi-; megalo-. Related "metric" families: yotta; zetta; exa; peta; tera; giga; kilo; hecto; deka; deci; centi; milli; micro; nano; pico; femto; atto; zepto; yocto.
【同源单词】alphmegamia, dysmegalopsia, electronic megaphone, hydromegathermia, hydromegathermic, kilomegacycle