Capillary

a.	1.	Resembling a hair; fine; minute; very slender; having minute tubes or interspaces; having very small bore; as, the capillary vessels of animals and plants.
	2.	Pertaining to capillary tubes or vessels; as, capillary action. Capillary attraction the apparent attraction or repulsion between a solid and liquid caused by capillarity. See Capillarity, and Attraction. Capillarity tubes See the Note under Capillarity.
n.	1.	A tube or vessel, extremely fine or minute.
	2.	(Anat.) A minute, thin-walled vessel; particularly one of the smallest blood vessels connecting arteries and veins, but used also for the smallest lymphatic and biliary vessels.

Noun	1.	capillary - a tube of small internal diameter; holds liquid by capillary action Synonyms: capillary tube, capillary tubing
	2.	capillary - any of the minute blood vessels connecting arterioles with venules Synonyms: capillary vessel
Adj.	1.	capillary - of or relating to hair
	2.	capillary - long and slender with a very small internal diameter; "a capillary tube" Synonyms: hairlike

Pronunciation: (KAP-ih-lair-ee)

the smallest of the body's blood vessels. Oxygen and glucose pass through capillary walls and enter the cells. Waste products such as carbon dioxide pass back from the cells into the blood through capillaries.

aorta, arterial, arteriole, artery, blood vessel, bristlelike, carotid, cirrose, cirrous, fibered, fibroid, fibrous, flagelliform, flossy, funicular, gossamery, hairlike, hairy, jugular vein, ligamental, portal vein, pulmonary artery, pulmonary vein, ropy, silky, stringy, taeniate, taeniform, threadlike, thready, vascular, vein, veinlet, veinous, vena cava, venation, venose, venous, venule, vesicular, wiry