Entry 1 sense Webster, 1913 Ligamental /(lĭg"ȧ*mĕn"tal)/ · Lig·a·men·tal · IPA 01 a. Composing a ligament; of the nature of a ligament; binding; as, a strong ligamentous membrane. 1. Composing a ligament; of the nature of a ligament; binding; as, a strong ligamentous membrane.