ubiquitous: [19] Latin ubīque meant ‘everywhere’ (it was formed from ubī ‘where’ and a generalizing particle -que). From it was derived the modern Latin noun ubīquitās ‘quality of being everywhere’. This was adopted into English as ubiquity [16], which later formed the basis of ubiquitous. [ubiquitous etymology, ubiquitous origin, 英语词源]
"being, existing, or turning up everywhere," 1800, from ubiquity + -ous. The earlier word was ubiquitary (c. 1600), from Modern Latin ubiquitarius, from ubique (see ubiquity). Related: Ubiquitously; ubiquitousness.