capillary meaning and definition

CAPILLARY noun

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

CAPILLARY adjective

Definition of capillary (adjective)

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