词根词缀：pyg-, pygo-, -pyga, -pygia

【来源及含义】Greek: rump, bottom; rear end; behind part; the posterior or back part of the body

【相关词根词缀】 Word families with similar applications: "back, backside" word units: dorso- (back, on the back); lumbo- (loin, lower back); nuch- (nape of the neck).

【同源单词】callimammapygian, callipygian, Callipygian Venus, callipygous, callipygy, hypopygial

词根词缀：uro-, ur-, -urous, -ura, -uroid, -urus, -uridae

【来源及含义】Greek: tail, tail-like

【相关描述】Don't confuse this uro- unit with another uro- unit which refers to "water, rain, and urine".

【相关词根词缀】 Related "tail" word units: caudo-; cerc-.

【同源单词】anthurium, anurous, brachyurous, cynosure, urochord, urodele