Entry 1 sense Webster, 1913 Auricularia · Au·ric·u·la·ri·a · IPA /ɔˌɹɪk.jəˈɛɹi.ə/ 01 n. pl. A kind of holothurian larva, with soft, blunt appendages. See Illustration in Appendix. 1. A kind of holothurian larva, with soft, blunt appendages. See Illustration in Appendix.(Zool.)