珪けい藻そう

noun, noun which may take the genitive case particle 'no'

diatom

A type of single-celled algae with silica cell walls, found in water and soil. Used in biology and environmental science contexts.

• 珪けい藻そうは海かい洋ようの一いち次じ生せい産さん者しゃとして重じゅう要ようだ。

  Diatoms are important as primary producers in the ocean.

• この池いけの水みずを顕けん微び鏡きょうで見みると、たくさんの珪けい藻そうが観かん察さつできる。

  When you look at the water from this pond under a microscope, you can observe many diatoms.