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English definition of “onto”

onto

preposition (ADDING) (also on to)     /ˈɒn.tu/ US  /ˈɑːn.tu/
used about someone or something that is added to or joins a particular thing: Imir's been voted onto the union committee . I've been having problems loading this software onto my computer .Things added or attached to other thingsJoining and leaving groups and organizations Grammar:On, ontoOn and onto are prepositions.
(Definition of onto preposition (ADDING) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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