microporous

/ˌmaɪkroʊˈpɔrəs/
adjective
  1. Having very tiny pores or holes, usually too small to be seen without a microscope.
    • Scientists use microporous materials to capture and store gases like hydrogen.
    • This microporous foam is used in diapers because it lets air through but keeps liquids inside.
    • The microporous membrane in the water filter traps bacteria and other tiny particles.
Synonyms
What does "microporous" mean? | whatsthatwordmean | whatsthatwordmean