infusorial

Meanings

1. 1
   adj

   historical biology: relating to, containing, or formed from Infusoria, a former broad grouping of microscopic aquatic organisms

   The geologist identified the pale layer as infusorial earth made from microscopic remains.

From New Latin Infusoria + -al. Infusoria originally named microscopic organisms observed in plant infusions; later biology separated its diverse members into more accurate groups, leaving infusorial chiefly in historical and geological usage.

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