yǐ

second of the ten Heavenly Stems [[十天干<shítiāngān>]] / second in order / letter "B" or roman "II" in list "A, B, C", or "I, II, III" etc / second party (in legal contract, usually [[乙方<yǐfāng>]], as opposed to [[甲方<jiǎfāng>]]) / ethyl / bent / winding / radical in Chinese characters (Kangxi radical 5)

zhé

turning stroke (in Chinese characters) / see also [[折<zhé>]]

yǐmí

ether / diethyl ether C2H5OC2H5

yǐxíng

type B / type II / beta-

yǐèrchún

glycol / ethylene glycol C2H4(OH)2 (antifreeze)

yǐquē

acetylene / ethyne C2H2

jùyǐxī

polythene / polyethylene

yǎngyǐquē

oxyacetylene

yǎngyǐquējù

an oxyacetylene torch

yǎngyǐquēhàn

oxyacetylene welding