Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “membrane”

membrane

noun [C or U] uk   /ˈmem.breɪn/ specialized us  
anatomy a thin piece of skin that covers or connects parts of a person's or animal's body: The cornea is the transparent membrane that covers the front of the eye. engineering a very thin piece of material that covers an opening biology the outer covering of a cell: a cell membrane
(Definition of membrane from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of membrane?
Browse related topics

You are looking at an entry to do with Coverings and layers, but you might be interested in these topics from the Including and excluding topic area:

Add Cambridge dictionaries to your browser to your website

Definitions of “membrane” in other dictionaries

Word of the Day

from the word go

from the start of something

Word of the Day

Countability – grammar codes

by Dom Glennon​​,
November 26, 2014
Advices and informations Have you ever noticed strange codes in square brackets on entries in Cambridge Dictionaries Online and wondered what they mean? These are grammar codes, giving you a brief summary of how that word behaves grammatically. More information can be obtained by hovering your cursor over the code, and there’s

Read More 

ped-text verb

November 24, 2014
to text someone while walking I’m ped-texting, I’m looking down at my phone, 75 percent of the time.

Read More