Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “amnion”

See all translations

amnion

noun [C] uk   /ˈæm.ni.ən/ ( plural amnions or amnia   //   ) specialized us  
a bag made of thin skin that contains amniotic fluid and surrounds the embryo of a mammal, bird, or reptile inside its mother
amniotic
adjective uk   /ˌæm.niˈɒt.ɪk/ us    /-ˈɑː.t̬ɪk/
Translations of “amnion”
in Chinese (Traditional) (哺乳動物、鳥類或爬行動物胎兒的)羊膜…
in Chinese (Simplified) (哺乳动物、鸟类或爬行动物胎儿的)羊膜…
(Definition of amnion from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of amnion?
Add Cambridge dictionaries to your browser to your website

Word of the Day

exercise

physical activity that you do to make your body strong and healthy

Word of the Day

Byronic, Orwellian and Darwinian: adjectives from names.

by Liz Walter,
April 15, 2015
Becoming an adjective is a strange kind of memorial, but it is often a sign of a person having had real influence on the world. Science is full of examples, from Hippocrates, the Greek medic born around 460 BC, who gave his name to the Hippocratic Oath still used by doctors today,

Read More 

bio-inspiration noun

April 13, 2015
the adoption of patterns and structures found in nature for the purposes of engineering, manufacturing, science, etc. The MIT researchers actually aren’t the only robotics team to turn to cheetahs for bio-inspiration.

Read More