Definition of submicro in US English:

submicro

adjective

  • Attributive Designating something smaller in size or scale than that designated micro; specifically = "submicroscopic"; (Chemistry) involving amounts smaller than those typical of microanalysis.

Origin

Late 19th century; earliest use found in Journal of the American Chemical Society. From sub- + micro.

Pronunciation

submicro

/sʌbˈmʌɪkrəʊ/