dilate

To dilate something is to make it wider. When the light fades, the pupil of your eye will dilate, meaning it looks bigger.

The verb dilate comes from the Latin word dilatare, which means “enlarge” or “spread out.” When something stretches, expands, or becomes wider, it is said to dilate. Usually the word dilate is used when the opening of something circular becomes larger, but every so often you might hear someone refer to the need to dilate someone's understanding of quantum physics, global warming, livestock breeding, or any other topic.

Definitions of dilate
  1. verb
    become wider
    “His pupils were dilated
    synonyms: distend
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    type of:
    widen
    become broader or wider or more extensive
  2. verb
    add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing
    synonyms: elaborate, enlarge, expand, expatiate, exposit, expound, flesh out, lucubrate
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    Antonyms:
    abbreviate, abridge, contract, cut, foreshorten, reduce, shorten
    reduce in scope while retaining essential elements
    cut, edit, edit out
    cut and assemble the components of
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    types:
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    detail
    provide details for
    exposit, expound, set forth
    state
    exemplify, illustrate, instance
    clarify by giving an example of
    particularise, particularize, specialise, specialize, specify
    be specific about
    depict, describe, draw
    give a description of
    premise
    set forth beforehand, often as an explanation
    spell out
    make explicit; specify in detail
    type of:
    clarify, clear up, elucidate
    make clear and (more) comprehensible
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