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v. for·ti·fied, for·ti·fy·ing, for·ti·fies
To make strong, as:
a. To strengthen and secure (a position) with fortifications.
b. To reinforce by adding material.
c. To impart physical strength or endurance to; invigorate.
d. To give emotional, moral, or mental strength to; encourage: Prayer fortified us during our crisis.
e. To strengthen or enrich (food, for example), as by adding vitamins.
To build fortifications.
[Middle English fortifien, from Old French fortifier, from Late Latin fortificāre : Latin fortis, strong; see bhergh- in Indo-European roots + Latin -ficāre, -fy.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.