Having a combative character; aggressive, especially in the service of a cause: a militant political activist.
n. A fighting, warring, or aggressive person or party.
[Middle English, from Old French, from Latin mīlitāns, mīlitant-, present participle of mīlitāre, to serve as a soldier; see militate.] mil'i·tance, mil'i·tan·cy n., mil'i·tant·ly adv.
(mĭl'ĭ-tənt) 