3 days ago · The meaning of REFLECTION is an instance of reflecting; especially : the return of light or sound waves from a surface. How to use reflection in a sentence.

REFLECTION definition: 1. the image of something in a mirror or on any reflective surface: 2. the return of light, heat…. Learn more.

Apr 22, 2026 · reflection, abrupt change in the direction of propagation of a wave that strikes the boundary between different mediums. At least part of the oncoming wave disturbance remains in the …

Reflected waves return immediately to their original medium instead of entering the medium they encounter. ♦ According to the law of reflection, the angle of reflection of a reflected wave is equal to …

Definition of reflection noun in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

There are 22 meanings listed in OED's entry for the noun reflection, five of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

the act of reflecting or the state of being reflected:[uncountable] the reflection of the sun on the water. [countable] something reflected, as an image. careful consideration:[uncountable] After much …

Apr 21, 2026 · reflection (countable and uncountable, plural reflections) The act of reflecting or the state of being reflected. The property of a propagated wave being thrown back from a surface (such as a …

REFLECTION definition: 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. See examples of reflection used in a …

A reflection is an image that you can see in a mirror or in glass or water. Meg stared at her reflection in the bedroom mirror.