placoid definition, placoid meaning | English dictionary

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placoid

  

      adj  
1    platelike or flattened  
2    (of the scales of sharks and other elasmobranchs) toothlike; composed of dentine with an enamel tip and basal pulp cavity  
     (C19: from Greek plac-, plax flat)  
English Collins Dictionary - English Definition & Thesaurus  
See also:

placid, plaid, placidly, plasmoid

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