IPA: /ˌmaɪkrəˈpɔːrəs/
KK: /maɪkroʊˈpɔrəs/
This term describes a material that contains very tiny holes or spaces, specifically those that are smaller than 2 nanometers in size.
The new filter is made from a microporous material that effectively removes impurities from water.
Microporous is formed from "micro-" (meaning small) and "porous" (from Latin "porosus", meaning full of pores). The word describes a material that is full of very small pores, allowing for the passage of gases or liquids.
Think of 'micro-' meaning small, and 'porous' meaning full of holes. This helps you remember that 'microporous' refers to something that has many tiny holes.