placoid
AdjectiveUS[plak-oid]/ˈplækɔɪd/2 syllables
Synonyms:
platelike
Open English WordNet
Adjective (1)
- as the hard flattened scales of e.g. sharksSynonyms: platelikeOpposite cubic, linearSimilar planar, two-dimensional
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Webster's Dictionary (1913)
Plac′oid adjective
Origin: Gr. πλάξ, πλακός, a tablet + -oid.
Zoology Platelike; having irregular, platelike, bony scales, often bearing spines; pertaining to the placoids.
Plac′oid noun
Zoology (a) Any fish having placoid scales, as the sharks. (b) One of the Placoides.
Webster’s Revised Unabridged Dictionary (1913), from GCIDE 0.54