placoid

• Adjetivo que describe algo que tiene escamas placoides, características de los peces cartilaginosos como tiburones y rayas; también se usa para referirse a dichas escamas o a estructuras similares.

An obsolete adjective describing something having placoid scales, characteristic of cartilaginous fishes like sharks and rays.

1. Scale typeC2formalscientific

   Describing a type of hard, flattened, tooth-like scale found on cartilaginous fish such as sharks and rays.

   Escama placoides

   • Sharks have placoid scales that give their skin a rough texture.
   • The placoid scales of a ray are similar to those of a shark.
   • Placoid scales are also known as dermal denticles.