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1. (adj.) placoid
platelike, as the scales or dermal investments of sharks.
Etymology: (1835–45; < Gk plak- (s. of pláx) something flat, tablet)
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| Definition of 'placoid' |
Princeton's WordNet |
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1. (adj) placoid, platelike
as the hard flattened scales of e.g. sharks
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| Definition of 'placoid' |
Webster Dictionary |
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1. (adj) placoid
platelike; having irregular, platelike, bony scales, often bearing spines; pertaining to the placoids
2. (noun) placoid
any fish having placoid scales, as the sharks
3. (noun) placoid
one of the Placoides
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