placoid in English

adjective
1
(of fish scales) toothlike, being made of dentin with a pointed backward projection of enamel, as in sharks and rays.
Similar attempts had been underway in the dermal skeleton, stemming from Williamson's use of placoid scales from extant sharks as conceptual units in comparative analysis.
adjective
    platelike

Use "placoid" in a sentence

Below are sample sentences containing the word "placoid" from the English Dictionary. We can refer to these sentence patterns for sentences in case of finding sample sentences with the word "placoid", or refer to the context using the word "placoid" in the English Dictionary.

1. The tubercle is contrasted with placoid and ganoid scales.

2. The primary categories of fish scales are placoid, cosmoid, ganoid, cycloid and Ctenoid scales

3. PATIENTS: Patient 1 and 2 presented with unilateral decrease in visual acuity and yellowish placoid macular changes.

4. The body shape and structure of the trunk placoid scales indicate the ability to swim quickly.

5. Compare with ganoid and placoid ‘The body is covered with small Ctenoid scales that extend well onto the dorsal and anal fins.’