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English definition of “under”

under

preposition (LESS THAN)    /ˈʌn.dər/ US  /-dɚ/
A2 less than: All items cost /are under a pound . The discount applies only to children under (the age of) ten (= younger than ten). If you get under 50 percent , you've failed the exam . → Opposite overSmall in number and quantity overGrammar:Beneath, under or below?Beneath has a meaning similar to under and below but we do not use it with numbers:Grammar:UnderUnder is a preposition. When we use under as a preposition, it is similar to below. We use under to talk about something that is below or lower than something else:
(Definition of under preposition (LESS THAN) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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