Definition

1. Adjective:
   • Resembling epithelium: Having a form, structure, or appearance similar to that of epithelial tissue, which is the thin layer of cells lining the surfaces of organs, blood vessels, and cavities in the body.

Usage and Examples

• Adjective:
  • The pathologist noted the presence of epithelioid cells in the biopsy sample.
  • Granulomas often contain clusters of epithelioid macrophages.
  • Under the microscope, the tumor showed an epithelioid morphology.

Advanced Usage

• "Epithelioid cell": A specific type of cell, often a modified macrophage, that has taken on a shape resembling an epithelial cell. These cells are commonly found in certain types of inflammatory reactions and tumors.
  • The formation of epithelioid cells is a hallmark of a granulomatous immune response.

Variants and Related Words

• Epithelium (n): The actual tissue consisting of closely packed cells that lines surfaces and cavities.
  • The epithelium of the skin protects the body from the external environment.
• Epithelial (adj): Pertaining to or composed of epithelium.
  • Squamous cell carcinoma is a cancer of the epithelial tissue.

Synonyms

• Epithelial-like: Having a likeness to epithelium.

Notes on Meaning

• The term epithelioid is primarily used in medical and biological contexts, particularly in histology (the study of tissues) and pathology. It describes the appearance of cells that are not true epithelial cells but look similar to them. It is not a term used in general, everyday language.

Adjective

1. resembling epithelium
   • epithelial tissue