dilate | WordDisk

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• make or become wider, larger, or more open.

• "her eyes dilated with horror"

Similar: enlarge, become larger, widen, become wider, expand, distend, swell,

Opposite: contract,

Origin: late Middle English: from Old French dilater, from Latin dilatare ‘spread out’, from di- ‘apart’ + latus ‘wide’.

• speak or write at length on a subject.
"the faithful could hear the minister dilate on the role religion could play"