Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
proelĭāris (prael-) and proelĭā-lis, e, adj. [proelium], of or belonging to a battle (ante- and post-class.): pugnae proeliares, pitched battles, Plaut. Curc. 4, 4, 17: acies, App. M. 8, p. 208, 40: proeliares dies appellantur, quibus fas est hostem bello lacessere, Paul. ex Fest. p. 266 Müll.; called also proeliales dies, Macr. 1, 16: proeliaris dea, i. e. Minerva, App. M. 10, p. 254, 21.