Webster’s Revised Unabridged Dictionary · 1913
Tenonian
Te·no′ni·an (tē·nō′nĭ·an), a. (Anat.) Discovered or described by M. Tenon, a French anatomist.
Tenonian capsule (Anat.), a lymphatic space inclosed by a delicate membrane or fascia (the fascia of Tenon) between the eyeball and the fat of the orbit; — called also capsule of Tenon.