Tenonian \Te*no"ni*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.

Source: Webster's Revised Unabridged Dictionary (1913)