词根词缀：cheiro-, cheir-, chiro-, chir-, -cheiria, -chiria

【来源及含义】Greek: hand; pertaining to the hand or hands

【相关词根词缀】 Related "hand" units: Dextro and Sinsitro History; Hands as Objects of Art; Hands: Mechanical Marvels; manu-; palm.

【同源单词】acephalochiria, acheiral, acheiria, acheiropodia, acheirus, achirus

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

词根词缀：ptero-, pter-, -ptera, -pteron, -pteryx, -ptery, -pterous

【来源及含义】Greek: feather; wing, winglike

【相关词根词缀】 Related "feather, feather-like; soft down, plumage" word units: penna-; pinni-, pin-; plum-, -plume; pterido-; ptilo-.

【同源单词】Aphaniptera, apterex, apteria, apterous, apteryx, Archaeopteryx