reflection
Americannoun
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the act of reflecting, as in casting back a light or heat, mirroring, or giving back or showing an image; the state of being reflected in this way.
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an image; representation; counterpart.
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a fixing of the thoughts on something; careful consideration.
- Synonyms:
- thinking, study, cogitation, deliberation, rumination, meditation
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a thought occurring in consideration or meditation.
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an unfavorable remark or observation.
- Synonyms:
- criticism, reproach, aspersion, imputation
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the casting of some imputation or reproach.
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Physics, Optics.
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the return of light, heat, sound, etc., after striking a surface.
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something so reflected, as heat or especially light.
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Mathematics.
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(in a plane) the replacement of each point on one side of a line by the point symmetrically placed on the other side of the line.
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(in space) the replacement of each point on one side of a plane by the symmetric point on the other side of the plane.
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Anatomy. the bending or folding back of a part upon itself.
noun
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the act of reflecting or the state of being reflected
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something reflected or the image so produced, as by a mirror
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careful or long consideration or thought
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implicit or explicit attribution of discredit or blame
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maths a transformation in which the direction of one axis is reversed or which changes the sign of one of the variables
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anatomy the bending back of a structure or part upon itself
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The change in direction of a wave, such as a light or sound wave, away from a boundary the wave encounters. Reflected waves remain in their original medium rather than entering the medium they encounter.
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◆ According to the law of reflection, the angle of reflection of a reflected wave is equal to its angle of incidence.
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Compare refraction See more at wave
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Something, such as sound, light, or heat, that is reflected.
Other Word Forms
- interreflection noun
- nonreflection noun
- overreflection noun
- reflectional adjective
- reflectionless adjective
- self-reflection noun
- superreflection noun
Etymology
Origin of reflection
First recorded in 1350–1400; Middle English, from Late Latin reflexiōn-, stem of reflexiō “a bending back,” from Latin reflex(us) “bent back” (past participle of reflectere; reflect ) + -iō -ion
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.