Epithelium

//ˌɛpɪˈθiːlɪəm// noun

noun ·Uncommon ·Advanced level

Definitions

Noun
  1. 1
    A membranous tissue composed of one or more layers of cells which forms the covering of most internal and external surfaces of the body and its organs: internally including the lining of vessels and other small cavities, and externally being the skin. countable, uncountable

    "the passenger's roving eyes paused for a moment as he listened inwardly to a nether itch, which he supposed to be (correctly, thank Log) only a minor irritation of the epithelium."

  2. 2
    membranous tissue covering internal organs and other internal surfaces of the body wordnet

Example

More examples

"The parasympathetic nerves of a developing salivary gland innervate the salivary gland epithelium which is essential for organogenesis."

Etymology

From New Latin epithēlium. By surface analysis, epi- + thel- + -ium.

Related phrases

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.