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/ˈrēˌfleks/ Noun 1. An automatic response to a simple stimulus which does not require mental processing. (; An involuntary response to a stimulus.( 2. (Science: neurology, physiology) A reflected action or movement, the sum total of any particular involuntary activity. An automatic instinctive unlearned reaction to a stimulus. ( 3. An action or movement of the body that happens automatically as a reaction to something; something that you do without thinking as a reaction to something ( 4.An action consisting of comparatively simple segments of behaviour that usually occur as direct and immediate responses to particular stimuli uniquely correlated with them. ( 5. a. Something, such as light or heat, that is reflected; b. An image produced by reflection; a copy or reproduction.( 6. (Psychology) An unlearned or instinctive response to a stimulus. Adjective 1. (Of an action) Performed without conscious thought as an automatic response to a stimulus. (Google Dictionary) 2. (Physiology) Being an involuntary action or response, such as a sneeze, blink, or hiccup. ( Word origin: from Late Latin reflexus “a bending...

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