'Reflex' definitions:

Definition of 'reflex'

From: WordNet
adjective
Without volition or conscious control; "the automatic shrinking of the pupils of the eye in strong light"; "a reflex knee jerk"; "sneezing is reflexive" [syn: automatic, reflex(a), reflexive]
noun
An automatic instinctive unlearned reaction to a stimulus [syn: reflex, reflex response, reflex action, instinctive reflex, innate reflex, inborn reflex, unconditioned reflex, physiological reaction]

Definition of 'Reflex'

From: GCIDE
  • Reflex \Re"flex\ (r?"fl?ks; formerly r?*fl?ks"), n. [L. reflexus a bending back. See Reflect.]
  • 1. Reflection; the light reflected from an illuminated surface to one in shade. [1913 Webster]
  • Yon gray is not the morning's eye, 'Tis but the pale reflex of Cynthia's brow. --Shak. [1913 Webster]
  • On the depths of death there swims The reflex of a human face. --Tennyson. [1913 Webster]
  • 2. (Physiol.) An involuntary movement produced by reflex action. [1913 Webster]
  • Patellar reflex. See Knee jerk, under Knee. [1913 Webster]

Definition of 'Reflex'

From: GCIDE
  • Reflex \Re"flex\ (r?"fl?ks), a. [L. reflexus, p. p. of reflectere: cf. F. r['e]flexe. See Reflect.]
  • 1. Directed back; attended by reflection; retroactive; introspective. [1913 Webster]
  • The reflex act of the soul, or the turning of the intellectual eye inward upon its own actions. --Sir M. Hale. [1913 Webster]
  • 2. Produced in reaction, in resistance, or in return. [1913 Webster]
  • 3. (Physiol.) Of, pertaining to, or produced by, stimulus or excitation without the necessary intervention of consciousness. [1913 Webster]
  • Reflex action (Physiol.), any action performed involuntarily in consequence of an impulse or impression transmitted along afferent nerves to a nerve center, from which it is reflected to an efferent nerve, and so calls into action certain muscles, organs, or cells.
  • Reflex nerve (Physiol.), an excito-motory nerve. See Exito-motory. [1913 Webster]

Definition of 'Reflex'

From: GCIDE
  • Reflex \Re*flex"\ (r?*fl?ks"), v. t. [L. reflexus, p. p. of reflectere. See Reflect.]
  • 1. To reflect. [Obs.] --Shak. [1913 Webster]
  • 2. To bend back; to turn back. --J. Gregory. [1913 Webster]

Synonyms of 'reflex'

From: Moby Thesaurus