zoo
n.
c.1847, short for Zoological Gardens of the London Zoological Society, established 1828 in Regent's Park to house the society's collection of wild animals. The first three letters taken as one syllable. "From a mere vulgarism, this corruption has passed into wide colloquial use" [Century Dictionary]. Slang meaning "crowded and chaotic place" first recorded 1935.
词根：zoo = animal, 表示“动物”
zoology n. 动物学（zoo+logy学科）
zootomy n. 动物解剖学（zoo+tomy解剖）
zoic a. 动物的（zo[=zoo]+ic）
azoic a. 无生命的（is无+zoic→无动物的→无生命的）
zodiac n. 黄道（由12个星座组成，几乎所有星座都用动物命名）
〔李〕[zo;-on.] n.动物园 ←vot,vow (L vovere,votus)=to vow 起誓