omni-youdaoicibaDictYouDict[omni- 词源字典]
word-forming element meaning "all," from Latin omni-, combining form of omnis "all, every, the whole, of every kind," of unknown origin, perhaps literally "abundant," from *op-ni-, from PIE root *op- (1) "to work, produce in abundance" (see opus).[omni- etymology, omni- origin, 英语词源]