Placoid Medical Definition

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Placoid Definition & Meaning - Merriam-Webster

https://www.merriam-webster.com/dictionary/placoid

placoid adjective plac· oid ˈpla-ˌkȯid : of, relating to, or being a scale of dermal origin with an enamel-tipped spine characteristic of the elasmobranchs Word History Etymology Greek plak-, plax flat surface First Known Use 1842, in the meaning defined above Time …

Placoid | definition of placoid by Medical dictionary

https://medical-dictionary.thefreedictionary.com/placoid

Placoids are tooth-like structures of enamel, covered with dentine. Compare COSMOID, GANOID. Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. …

Placoides | definition of Placoides by Medical dictionary

https://medical-dictionary.thefreedictionary.com/Placoides

placoid or denticle the dermal denticles of cartilaginous fish. Placoids are tooth-like structures of enamel, covered with dentine. Compare COSMOID, GANOID. Collins …

Placode | definition of placode by Medical dictionary

https://medical-dictionary.thefreedictionary.com/placode

placode. [ plak´ōd] a platelike structure, especially a thickening of the ectoderm marking the site of future development in the early embryo of an organ of special …

Placoid Definition & Meaning | Dictionary.com

https://www.dictionary.com/browse/placoid

British Dictionary definitions for placoid placoid / ( ˈplækɔɪd) / adjective platelike or flattened (of the scales of sharks and other elasmobranchs) toothlike; composed of …

Placoid - definition of placoid by The Free Dictionary

https://www.thefreedictionary.com/placoid

(plăk′oid) adj. 1. Platelike. 2. a. Relating to or being a kind of fish scale that is a toothlike plate with a protruding spine, characteristic of sharks, skates, and rays. b. Having …

Placoid fishes | definition of Placoid fishes by Medical …

https://medical-dictionary.thefreedictionary.com/Placoid+fishes

Definition of Placoid fishes in the Medical Dictionary by The Free Dictionary

Mucoid Plaque: Definition, Treatment, and …

https://www.healthline.com/health/mucoid-plaque

What is mucoid plaque? Some people believe that mucus can build up on the walls of the colon over time. Your colon is the final part of your digestive system. It’s responsible for eliminating...

Placoid fish | definition of Placoid fish by Medical dictionary

https://medical-dictionary.thefreedictionary.com/Placoid+fish

a class of the phylum Chordata containing the cartilaginous fish, sharks, rays and chimaeras. In some classifications, the term is synonymous with ELASMOBRANCHII. …

Placoderm - definition of placoderm by The Free Dictionary

https://www.thefreedictionary.com/placoderm

(plăk′ə-dûrm′) n. Any of various extinct jawed fishes of the group Placodermi of the Silurian and Devonian Periods, having bony plates of armor covering the head and …

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