look up

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English[edit]

Verb[edit]

look up (third-person singular simple present looks up, present participle looking up, simple past and past participle looked up)

  1. Used other than as an idiom: see look,‎ up.
    We stayed up late to look up at the stars.
  2. (intransitive, idiomatic) To have better prospects, to improve.
    Things started looking up after Jim moved back in with his parents.
  3. (transitive, idiomatic) To obtain information about something from a text source.
    I didn't know what a mitochondrion was until I looked it up in a dictionary.

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