Definition of potamoplankton in US English:

potamoplankton

noun

Biology
  • Plankton found in rivers or streams.

Origin

Late 19th century; earliest use found in American Naturalist. From German Potamoplankton from ancient Greek ποταμός river + German Plankton.

Pronunciation

potamoplankton

/ˌpɒtəmə(ʊ)ˈplaŋ(k)tən/