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protoctist

British  
/ prəʊˈtɒktɪst /

noun

  1. (in modern biological classifications) any unicellular or simple multicellular organism belonging to the kingdom Protoctista, which includes protozoans, algae, and slime moulds

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

protoctist Scientific  
/ prə-tŏktĭst /
  1. See protist


Etymology

Origin of protoctist

C19: from New Latin protoctista, perhaps from Greek prototokos first born