1. Become wider
   "His pupils were dilated"
   - distend 
2. Add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing
   - elaborate, lucubrate, expatiate, exposit, enlarge, flesh out, expand, expound

Derived forms: dilates, dilated, dilating

See also: dilatation, dilation, dilator

Type of: clarify, clear up, elucidate, widen

Encyclopedia: Dilate

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