reflex Definition in the Cambridge English Dictionary Cambridge dictionaries logo
Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

Definition of “reflex” - English Dictionary

"reflex" in American English

See all translations

reflexnoun [C usually pl]

 us   /ˈriˌfleks/
a ​sudden, ​automaticreaction to something: He’s ​strong, always has good positioning, and his reflexes are ​fantastic.
biology A reflex is also an ​automaticreactioninvolvingnervecells that is not ​controlled by the ​brain, and, ​therefore, does not ​involvechoice, for ​example, ​sneezing or ​vomiting
(Definition of reflex from the Cambridge Academic Content Dictionary © Cambridge University Press)







"reflex" in British English

See all translations

reflexnoun

uk   /ˈriː.fleks/  us   /ˈriː.fleks/
[C] a ​physicalreaction to something that you cannot ​control: I'm ​sorry I ​punched him, it was a reflex action/​response.
reflexes [plural]
the ​ability to ​reactquickly: Fighter ​pilots need good/​fast reflexes.

reflexadjective

uk   /ˈriː.fleks/  us   /ˈriː.fleks/ specialized
A reflex ​angle is more than ​180° and less than 360°.
(Definition of reflex from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of reflex?
Add Cambridge dictionaries to your browser to your website

More meanings of “reflex”

There, their and they’re – which one should you use?
There, their and they’re – which one should you use?
by ,
April 27, 2016
by Liz Walter If you are a learner of English and you are confused about the words there, their and they’re, let me reassure you: many, many people with English as their first language share your problem! You only have to take a look at the ‘comments’ sections on the website of, for example, a popular

Read More 

Word of the Day

planet

an extremely large, round mass of rock and metal, such as Earth, or of gas, such as Jupiter, that moves in a circular path around the sun or another star

Word of the Day

trigger warning noun
trigger warning noun
May 02, 2016
a warning that a subject may trigger unpleasant emotions or memories This is not, I should stress, an argument that trigger warnings should become commonplace on campus.

Read More