Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
reflexion is a noun meaning "the phenomenon of a propagating wave (light or sound) being thrown back from a surface". It carries 7 recorded senses.
the phenomenon of a propagating wave (light or sound) being thrown back from a surface
expression without words
“tears are an expression of grief”
“the pulse is a reflection of the heart's condition”
a remark expressing careful consideration
a calm, lengthy, intent consideration
the ability to reflect beams or rays
a likeness in which left and right are reversed
the image of something as reflected by a mirror (or other reflective material)
“he studied his reflection in the mirror”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for reflexion come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.