Definition of fortified
1
: made stronger or more secure
a fortified city fortified bridges
2
: improved or enhanced through the addition of one or more ingredients: such as
a
: having the alcohol content increased by the addition of distilled grape spirits during fermentation
Since Port is a fortified wine, it is fermented to about 5 percent alcohol, then brandy is added to arrive at a level of 20 percent alcohol.— James Suckling
b
: enriched (as with vitamins or minerals) so that nutritional value is improved
fortified milk
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Merriam-Webster unabridged
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Time Traveler for fortified
The first known use of fortified was in 1538
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