1) Innermost part of an artery 2) Membrane 3) Tissue layer 
<pathology> Inner layer of blood vessel, comprising an endothelial monolayer on the luminal face with a subcellular elastic extracellular matrix containing a few smooth muscle cells. ... Below the intima is the media, then the adventitia. The term may be applied to other organs. ... (18 Nov 1997) ... 
(in´tĭ-mә) innermost. tunica intima.
Inner layer of blood vessel, comprising an endothelial monolayer on the luminal face with a subcellular elastic extracellular matrix containing a few smooth muscle cells. Below the intima is the media, then the adventitia. The term may be applied to other organs.
Type: Term Pronunciation: in′ti-mă Definitions: 1. Innermost. See: tunica intima
[n] - the innermost membrane of an organ (especially the inner lining of an artery or vein or lymphatic vessel)
noun the innermost membrane of an organ (especially the inner lining of an artery or vein or lymphatic vessel)
Latin = innermost.
the innermost membrane or lining of some organ or part, esp. that of an artery, vein, or lymphatic.