| reflation | (noun) inflation of currency after a period of deflation; restore the system to a previous state | - |
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| reflectance | (noun) the fraction of radiant energy that is reflected from a surface | Synonyms: coefficient of reflection, reflection factor, reflectivity |
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| reflection | (noun) the image of something as reflected by a mirror (or other reflective material) | Synonyms: reflexion |
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| (noun) the ability to reflect beams or rays | Synonyms: reflectivity, reflexion |
| (noun) a likeness in which left and right are reversed | Synonyms: mirror image, reflexion |
| (noun) a calm, lengthy, intent consideration | Synonyms: contemplation, musing, reflexion, rumination, thoughtfulness |
| (noun) a remark expressing careful consideration | Synonyms: observation, reflexion |
| (noun) expression without words | Synonyms: expression, manifestation, reflexion |
| (noun) the phenomenon of a propagating wave (light or sound) being thrown back from a surface | Synonyms: reflexion |
| (noun) (mathematics) a transformation in which the direction of one axis is reversed | - |
| reflectiveness | (noun) the capability of quiet thought or contemplation | Synonyms: reflectivity |
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| reflectivity | (noun) the ability to reflect beams or rays | Synonyms: reflection, reflexion |
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| (noun) the capability of quiet thought or contemplation | Synonyms: reflectiveness |
| (noun) the fraction of radiant energy that is reflected from a surface | Synonyms: coefficient of reflection, reflectance, reflection factor |
| reflectometer | (noun) a meter that measures the reflectance of a surface | - |
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| reflector | (noun) device that reflects radiation | - |
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| (noun) optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece | Synonyms: reflecting telescope |
| reflex | (noun) an automatic instinctive unlearned reaction to a stimulus | Synonyms: inborn reflex, innate reflex, instinctive reflex, physiological reaction, reflex action, reflex response, unconditioned reflex |
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| reflexion | (noun) the image of something as reflected by a mirror (or other reflective material) | Synonyms: reflection |
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| (noun) the ability to reflect beams or rays | Synonyms: reflection, reflectivity |
| (noun) a likeness in which left and right are reversed | Synonyms: mirror image, reflection |
| (noun) a calm, lengthy, intent consideration | Synonyms: contemplation, musing, reflection, rumination, thoughtfulness |
| (noun) a remark expressing careful consideration | Synonyms: observation, reflection |
| (noun) expression without words | Synonyms: expression, manifestation, reflection |
| (noun) the phenomenon of a propagating wave (light or sound) being thrown back from a surface | Synonyms: reflection |
| reflexive | (noun) a personal pronoun compounded with -self to show the agent's action affects the agent | Synonyms: reflexive pronoun |
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| reflexiveness | (noun) the coreferential relation between a reflexive pronoun and its antecedent | Synonyms: reflexivity |
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| (noun) (logic and mathematics) a relation such that it holds between an element and itself | Synonyms: reflexivity |
| reflexivity | (noun) the coreferential relation between a reflexive pronoun and its antecedent | Synonyms: reflexiveness |
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| (noun) (logic and mathematics) a relation such that it holds between an element and itself | Synonyms: reflexiveness |
| reflexology | (noun) massage to relieve tension by finger pressure; based on the belief that there are reflex points on the feet, hands, and head that are connected to every part of the body | - |
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| (noun) the study of reflex action as it relates to the behavior of organisms | - |
| reflux | (noun) the outward flow of the tide | Synonyms: ebb |
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| (noun) an abnormal backward flow of body fluids | - |