(military) To increase the defenses of; to strengthen and secure by military works; to render defensible against an attack by hostile forces. / (figuratively) To impart strength or vigor to.

present participle of fortify

The process by which something is fortified.

simple past tense and past participle of fortify

A fortified wine.

Having strong defenses.

Third-person singular simple present indicative form of fortify

One who fortifies.

plural of fortifier

That can be fortified