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The Collaborative International Dictionary of English v.0.48 (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.
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Yon gray is not the morning's eye,
'Tis but the pale reflex of Cynthia's brow. --Shak.
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On the depths of death there swims
The reflex of a human face. --Tennyson.
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2. (Physiol.) An involuntary movement produced by reflex
action.
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{Patellar reflex}. See {Knee jerk}, under {Knee}.
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Reflex \Re*flex"\ (r?*fl?ks"), v. t. [L. reflexus, p. p. of
reflectere. See {Reflect}.]
1. To reflect. [Obs.] --Shak.
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2. To bend back; to turn back. --J. Gregory.
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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.
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The reflex act of the soul, or the turning of the
intellectual eye inward upon its own actions. --Sir
M. Hale.
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2. Produced in reaction, in resistance, or in return.
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3. (Physiol.) Of, pertaining to, or produced by, stimulus or
excitation without the necessary intervention of
consciousness.
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{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}.
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