denticle

/'dentikl/

Thân thiện

A scientist examines the denticles on a shark's skin under a microscope.

Definition

1. Noun:
   • A small, tooth-like projection or pointed structure: A denticle is a tiny, pointed, often scale-like structure, typically found on the skin or exoskeleton of certain animals, such as sharks or arthropods. It resembles a small tooth in form.

Usage

• Noun:
  • Denticles are often studied to understand the texture and hydrodynamic properties of an animal's skin.
  • The term is used primarily in biological and zoological contexts to describe specific anatomical features.

Examples

• Noun:
  • The shark's skin is covered in microscopic denticles that reduce drag as it swims.
  • Under the microscope, the denticles on the beetle's exoskeleton were clearly visible.

Advanced Usage

• "Placoid denticle": A specific type of denticle found in cartilaginous fish like sharks and rays.
  • The placoid denticles give shark skin its characteristic rough, sandpaper-like texture.

Variants and Related Words

• Denticulate (adj): Having small tooth-like projections; finely toothed.
  • The leaf margin was denticulate.

Synonyms

• Toothlet: A very small tooth or tooth-like projection.
• Scale: (In specific biological contexts, though a scale can be broader and less tooth-like in form).

Học thuật

Noun

1. small pointed ridge on the exoskeleton of an arthropod