re·in·force vt \ˌrē-ən-ˈfō(ə)rs, -ˈfȯ(ə)rs\
: to strengthen by additional material or support : make stronger <reinforced with vitamins>
: to stimulate (as an experimental animal or a student) by reinforcement; also : to encourage (a response) by reinforcement
—re·in·force·able \-ə-bəl\ adjective
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