Lewis & Short

† prŏsēlytus, a, um, = προσήλυτος, come from abroad, foreign, strange (late Lat.): numeravit Salomon omnes viros proselytos, Vulg. 2 Par. 2, 17.
Hence, as subst.,

    1. 1. prŏsēlytus, i, m.
  1. I. A sojourner, a stranger in the land: proselyti et advenae, Vulg. Tob. 1, 7; id. Ezech. 14, 7.
  2. II. Esp., one that has come over from heathenism to the Jewish religion, a proselyte (postclass.), Tert. adv. Marc. 3, 21; Hier. Ep. 64, n. 8; Vulg. Matt. 23, 15; Inscr. Fabr. p. 465, n. 101.
      1. 2. prŏsēlyta, ae, f., a female proselyte, converted woman, Inscr. Orell. 25, 22.