placoid

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plac·oid (pl

oid)

adj.

Platelike, as the hard toothlike scales of sharks, skates, and rays.

[Greek plax, plak-, flat stone, plate; see plk-¹ in Indo-European roots + -oid.]

placoid [ˈplækɔɪd]

adj

1. (Life Sciences & Allied Applications / Biology) platelike or flattened

2. (Life Sciences & Allied Applications / Zoology) (of the scales of sharks and other elasmobranchs) toothlike; composed of dentine with an enamel tip and basal pulp cavity

[from Greek plac-, plax flat]

ThesaurusLegend: Synonyms Related Words Antonyms

Adj.

placoid - as the hard flattened scales of e.g. sharks

platelike

planar, two-dimensional - involving two dimensions

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cartilaginous fish chondrichthian denticle elasmobranch Elasmobranchii placoidian platelike Ray selachian Selachii shark subclass Elasmobranchii subclass Selachii			Even though many sharks have an ancient ancestry, most modern sharks have very small scales, called dermal denticles or placoid scales. In the scales by Gilmore, R. Grant / Florida Sportsman 15 In marine life, the terms cycloid and placoid refer to which part of a fish? YourLIFE: ARE YOU THE WEAKEST LINK? Can you complete Anne Robinson's ... by The Mirror (London, England) Sharks have placoid scales, consisting of a rectangular base embedded in the skin with tiny spines that poke upwards from the surface, making them feel rough. Reducing the scale of drag by Engineer: The Professional Bulletin for Army Engineers			placer placer miner placer mining Places placeseeker placet Placid placidity placidly Placidness Placido Domingo Placidyl placing placings Placit Placitory Placitum Plack placket placoderm Placodermal Placodermata Placodermi Placoganoid Placoganoidei placoid Placoides placoidian Placophora Placuna Placuna placenta plafond Plaga plagal plagal cadence Plagate plage Plagianthus Plagianthus betulinus Plagianthus regius plagiarisation plagiarise plagiarised plagiariser plagiarism plagiarist plagiaristic plagiarization plagiarize plagiarized plagiarizer			Placing the Issue Placing the Issue placings placings placings placings Placit placita Placitory Placitum Placitum Plack placket plackets Placobdella placode placode placoderm placoderm Placodermal Placodermata Placodermi Placodermi Placoderms Placoderms placodes Placodont Placodontia Placoganoid Placoganoidei placoid Placoid fish Placoid fish Placoid fishes Placoid fishes Placoid scale Placoid scale Placoides Placoides placoidian Placophora Placothuriidae Placque Placque Placque PLACS PLACT Placuna Placuna placenta Placzek, Adolph K. PLAD PLAD/CBTOS PLADO PLADS PLAE Plaek Khittasangkha PLAF PLAFIRE plafon fracture plafond plafond

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placoid