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reflex

[ adjective, noun ree-fleks; verb ri-fleks ]
/ adjective, noun ˈri flɛks; verb rɪˈflɛks /
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See synonyms for: reflex / reflexes on Thesaurus.com

adjective
noun
verb (used with object)
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Origin of reflex

1500–10; <Latin reflexus bent back, past participle of reflectere to reflect

OTHER WORDS FROM reflex

re·flex·ly, adverbre·flex·ness, nounmul·ti·re·flex, nounsem·i·re·flex, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use reflex in a sentence

British Dictionary definitions for reflex

reflex

noun (ˈriːflɛks)
adjective (ˈriːflɛks)
maths (of an angle) between 180° and 360°
(prenominal) turned, reflected, or bent backwards
verb (rɪˈflɛks)
(tr) to bend, turn, or reflect backwards

Derived forms of reflex

reflexible, adjectivereflexibility, noun

Word Origin for reflex

C16: from Latin reflexus bent back, from reflectere to reflect
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for reflex

reflex
[ rēflĕks′ ]

An involuntary physiological response to a stimulus, as the withdrawal of a body part from burning heat.
An unlearned or instinctive response to a stimulus. Also called unconditioned response See more at classical conditioning.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Cultural definitions for reflex

reflex

An action or movement not controlled by conscious thought. A reflex may be anything from a hiccup to the involuntary response of a body part, such as the action that occurs in the knee-jerk reflex.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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