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According to prior determination, as a given. For example,
This antibiotic is by definition the most effective now on the market
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Nearby words for by definition
by a hair
by a long shot
by a mile
by a nose
by a thread
by all accounts
by all means
by all odds
by and by
by and large
by any means
by any stretch
by dint of
by fits and starts
by guess and by god
by hook or by crook
by hook or crook
by leaps and bounds
by means of
by no means
by no stretch
by one's bootstraps
by one's wits
by reason of