Entry 1 sense Webster, 1913 Phyllous /(fĭl"lŭs)/ · Phyl·lous · IPA 01 a. Homologous with a leaf; as, the sepals, petals, stamens, and pistils are phyllous organs. 1. Homologous with a leaf; as, the sepals, petals, stamens, and pistils are phyllous organs.(Bot.)