Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “epithelial”


adjective     /ˌep.ɪˈθiː.li.əl/ US  // specialized
relating to the epithelium (= the layer of cells that cover most surfaces of the body): Epithelial cells form tissues that make up organs such as skin and glands.Substances and structures in the body
(Definition of epithelial adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of epithelial

Word of the Day


showing a wish to help or bring advantages to others, even if it results in disadvantage for yourself

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More