'Endothelia' definitions:

Definition of 'Endothelia'

From: GCIDE

Endothelium \En`do*the"li*um\, n.; pl. Endothelia. [NL., fr. Gr. 'e`ndon within + ? nipple.] (Anat.) The thin epithelium lining the blood vessels, lymphatics, and serous cavities. See Epithelium. [1913 Webster]