Definition of 'capillary'

Noun

1. a tube of small internal diameter; holds liquid by capillary action
      Synonyms: capillary tube capillary tubing
2. any of the minute blood vessels connecting arterioles with venules
      Synonyms: capillary vessel

Adjective

1. of or relating to hair
2. long and slender with a very small internal diameter; "a capillary tube"
      Synonyms: hairlike

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