{ ‖, n. [ NL. aërenchyma. See Aëro-; Enchyma. ] (Bot.) A secondary respiratory tissue or modified periderm, found in many aquatic plants and distinguished by the large intercellular spaces. [ Webster 1913 Suppl. ]

‖n. [ NL., fr. Gr. &unr_;&unr_;&unr_; sphere + -enchyma as in parenchima. ] (Bot.) Vegetable tissue composed of thin-walled rounded cells, -- a modification of parenchyma. [ 1913 Webster ]