Entry 1 sense Webster, 1913 Lemuroidea /(lĕm`ū̇*roi"dē̇*ȧ)/ · Lem·u·roi·de·a · IPA 01 n. pl. A suborder of primates, including the lemurs, the aye-aye, and allied species. 1. A suborder of primates, including the lemurs, the aye-aye, and allied species.(Zool.)