Relating to or resembling a hair; fine and slender.
Having a very small internal diameter: a capillary tube.
Anatomy Of or relating to the capillaries.
Physics Of or relating to capillarity.
n.
pl.cap·il·lar·ies
Anatomy One of the minute blood vessels that connect arterioles and venules. These blood vessels form an intricate network throughout the body for the interchange of various substances, such as oxygen and carbon dioxide, between blood and tissue cells.
capillaryAudio Help (kāp'ə-lěr'ē) Pronunciation Key
Any of the tiny blood vessels that connect the smallest arteries (arterioles) to the smallest veins (venules). Capillaries form a network throughout the body for the exchange of oxygen, metabolic waste products, and carbon dioxide between blood and tissue cells.
The tiny blood vessels throughout the body that connect arteries and veins. Capillaries form an intricate network around body tissues in order to distribute oxygen and nutrients to the cells and remove waste substances. (Seecirculatory system.)