placoid


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placoid

 [plak´oid]
platelike or plaquelike.

placoid

(plăk′oid)
adj.
Platelike.

placoid

Plate-like.

placoid

or

denticle

the dermal denticles of cartilaginous fish. Placoids are tooth-like structures of enamel, covered with dentine. Compare COSMOID, GANOID.
References in periodicals archive ?
By clinical feature, the greatest number of cases of posterior placoid chorioretinitis occurred in 2013 (4 patients) and 2015 (7 patients) and the least in 2014 (1 patient).
Jones, "Acute posterior multifocal placoid pigment epitheliopathy," British Journal of Ophthalmology, vol.
Relentless placoid chorioretinitis--a new entity or an unusual variant of serpiginous chorioretinitis?
Gaidukov, Polymer nanocomposites filled with nanoscale placoid particles of montmorillonite [Doctoral thesis], Riga Technical university, 2008.
Paratypes and other material examined: 6 paratypes and 7 eggs, same data as holotype (accession numbers 9340, 9343, 9346, 9349); 2 additional eggs, 109 additional specimens, same collection data as holotype; 1 paratype and 1 egg, same collection data as holotype, deposited in the Natal Museum, Pietermaritzburg, South Africa (accession numbers 9347, 9348); 1 cluster of three connected eggs found; 1 embryonated egg found with buccal apparatus and placoids.
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.
The use of Floy anchor tags was inappropriate because dogfish placoid scales wore through the plastic.
The shark has skin made of teeth-sharp scales called placoid scales.
Topbas, "Acute syphilitic posterior placoid chorioretinitis after an intravitreal triamcinolone acetonide injection," Acta Ophthalmologica Scandinavica, vol.
Figure abbreviations: ac--acrotergite; as--antecostal suture (ridge); br--transverse row of placoid sensilla on epipharynx; c--claw; cs--campaniform sensillum; dst--distal epipharyengal sensilla; dmr--dorsomesal row of setae on lacinia; er--epipharyngeal rods; f--femur; gl--galea; l--lacinia; lp--labial palp(i); mp--mesal pair of labro--epipharyngeal setae; msr--mesal row of setae on lacinia; mxp--maxillary palp(i); p2--2nd pair of labro-epipharyngeal setae; pr--pretarsus; pls--placoid sensilla; prst--prostheca; s--sensorium (accessory sensory papillae); sbp--subproximal epipharyngeal sensilla; st--stipes; t--tibia; tr--trochanter.
These changes in thickness and circulation are therefore called an "inflammatory" pattern in the choroid [19, 20] and also seen in chorioretinal diseases with yet unidentified pathogenesis, such as acute posterior multifocal placoid pigment epitheliopathy or unilateral acute idiopathic maculopathy [21,22].
Acute syphilitic posterior placoid chorioretinitis in late latent syphilis.