Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “reflex”

reflex

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

reflex

adjective uk   /ˈriː.fleks/ specialized us  
describes an angle that 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

Definitions of “reflex” in other dictionaries

Word of the Day

look on the bright side

to find good things in a bad situation

Word of the Day

The language of work

by Kate Woodford,
October 15, 2014
Most of us talk about our jobs. We tell our family and friends interesting or funny things that have happened in the workplace (=room where we do our job), we describe – and sometimes complain about – our bosses and colleagues and when we meet someone for the first time, we tell

Read More 

life tracking noun

October 20, 2014
the use of one or more devices or apps to monitor health, exercise, how time is spent, etc.

Read More