- reflex [rē′fleks΄; ] for v., also [ ri fleks′]n.[< L reflexus, reflected, pp. of reflectere: see REFLECT]1.a) reflection, as of lightb) light or color resulting from reflection2. a reflected image, likeness, or reproduction3.a) Physiol. a reflex actionb) any quick, automatic or habitual responsec) [pl.] ability to react quickly and effectively [a boxer with good reflexes]adj.1. turned, bent, or reflected back2.a) coming in reaction or reflection [a reflex effect]b) Physiol. designating or of an involuntary action, as a sneeze, resulting from a stimulus that is carried by an afferent nerve to a nerve center and the response that is reflected along an efferent nerve to some muscle or gland3. Electronics designating or of a device, circuit, etc. that has two different functions4. Geom. designating an angle greater than a straight angle (180°): see ANGLE1vt.1. to bend, turn, or fold back2. to cause to undergo a reflex processreflexlyadv.
English World dictionary. V. Neufeldt. 2014.