Definition of microbore in English:

microbore

adjective

  • Of a pipe: having a very narrow bore. Of equipment, especially a central heating system: incorporating such pipes.

noun

  • Central heating equipment which incorporates microbore piping.

Origin

1960s; earliest use found in Science. From micro- + bore.

Pronunciation

microbore

/ˈmʌɪkrə(ʊ)bɔː/