reflex light

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• reflex light — noun A lens with a reflecting back or a prism with internal reflection, returning a beam of light when the headlight, eg of a motor car, shines on it • • • Main Entry: ↑reflex …   Useful english dictionary

• reflex action — noun an automatic instinctive unlearned reaction to a stimulus • Syn: ↑reflex, ↑reflex response, ↑instinctive reflex, ↑innate reflex, ↑inborn reflex, ↑unconditioned reflex, ↑physiological reaction …   Useful english dictionary

• reflex response — noun an automatic instinctive unlearned reaction to a stimulus • Syn: ↑reflex, ↑reflex action, ↑instinctive reflex, ↑innate reflex, ↑inborn reflex, ↑unconditioned reflex, ↑physiological reaction …   Useful english dictionary

• reflex — [rē′fleks΄; ] for v., also [ ri fleks′] n. [< L reflexus, reflected, pp. of reflectere: see REFLECT] 1. a) reflection, as of light b) light or color resulting from reflection 2. a reflected image, likeness, or reproduction 3 …   English World dictionary

• light adaptation — n the adjustments including narrowing of the pupillary opening and decrease in rhodopsin by which the retina of the eye is made efficient as a visual receptor under conditions of strong illumination compare DARK ADAPTATION light adapt·ed līt ə… …   Medical dictionary

• 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… …   The Collaborative International Dictionary of English

• light adaptation — reflex changes in the eye to enable vision either in normal light after being in darkness or in very bright light after being in normal light. The pupil contracts (see pupillary reflex) and the pigment in the rods is bleached. Compare: dark… …   The new mediacal dictionary

• reflex — ► NOUN 1) an action performed without conscious thought as a response to a stimulus. 2) a thing that reproduces the essential features or qualities of something else. 3) archaic a reflected source of light. ► ADJECTIVE 1) performed as a reflex.… …   English terms dictionary

• Reflex (group) — Reflex is a Russian girl group consisting of three members: Zhenya Malakhova (Lead Vocals), Alyona Torganova (Vocals) and Anastasia Studenikina (Vocals). The group was created in 1999 and the first single called Dalni svet (Distant Light)… …   Wikipedia

• reflex — (n.) c.1500, reflection of light, from the verb meaning refract, deflect (late 14c.), from L.L. reflexus a bending back, properly pp. of reflectere (see REFLECTION (Cf. reflection)). Meaning involuntary nerve stimulation first recorded 1877, from …   Etymology dictionary

• light adaptation — light′ adapta tion n. oph the reflex adjustment of the eye to bright light, consisting of a constriction of the pupil, an increase in the number of functioning cones, and a decrease in the number of functioning rods • Etymology: 1895–1900 light′… …   From formal English to slang