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capillary tube
Variant of capillary
adjective
- of or like a hair, esp. in being very slender
- having a very small bore
- in or of capillaries
noun pl. capillaries
- a tube with a very small borealso capillary tube
- any of the tiny blood vessels normally connecting the smallest arteries (arterioles) with the smallest veins (venules)
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.