Definition

Noun: A specialized cell found in the germinal layer (stratum basale) of the epidermis, characterized by having numerous cytoplasmic spines (desmosomes) that connect it to neighboring cells, giving it a prickly or spiny appearance under a microscope.

Usage

The term is used primarily in histology, dermatology, and medical contexts to describe a specific type of epithelial cell that forms a key structural layer of the skin. * The prickle cell layer, or stratum spinosum, lies just above the basal layer of the epidermis. * Under microscopic examination, a prickle cell is easily identified by its spiny projections.

Examples

• The biopsy showed normal prickle cells in the stratum spinosum.
• In some skin diseases, the connections between prickle cells can become damaged.
• The pathologist noted the characteristic appearance of the prickle cell under high magnification.

Advanced Usage

• Prickle cell layer: The common compound term for the stratum spinosum, the layer of the epidermis composed primarily of these cells.
  • The carcinoma was confined to the prickle cell layer.

Variants and Related Words

• Stratum spinosum: The formal Latin name for the prickle cell layer.
• Keratinocyte: A broader term; prickle cells are a specific, spinous stage in the life cycle of a keratinocyte as it moves upward through the epidermis.
• Desmosome: The specialized cell structure (the "spine") that connects prickle cells to each other.

Synonyms

• Spinous cell
• Stratum spinosum cell (contextual)

Notes on Different Meanings

This is a highly specialized scientific term with a single, precise meaning in anatomy and medicine. It does not have common idiomatic or figurative uses.

Noun

1. a cell in the germinal layer of the skin (the prickle-cell layer); has many spines and radiating processes