Entry 1 sense Webster, 1913 Nectareous · Nec·ta·re·ous · IPA /nɛkˈtɛɹi.əs/ 01 a. Of, pertaining to, containing, or resembling nectar; delicious; nectarean. 1. Of, pertaining to, containing, or resembling nectar; delicious; nectarean.