Reflexions

Reflexions is a term used as the plural of reflexion, a word with meanings linked to turning back or reflecting. In modern English, "reflections" is the standard plural form; "reflexion" remains found in older texts and in some scientific or French-derived contexts. The plural "reflexions" may be used to describe multiple reflection phenomena, such as light, sound, or other waves, or as a stylistic spelling in titles and names.

In optics and physics, reflexion (often now "reflection") denotes the process by which waves bounce off a boundary. The term appears in historical treatments of optics and in various branches of physics and engineering. In mathematical language, a reflexion (also "reflection") is a symmetry operation that fixes a subspace and reverses orientation; the plural reflexions appears in older literature or in references to multiple such transformations.

In culture, Reflexions has been used as a title for artistic works, essays, or publications, and as a proper noun for a periodical or collection. When used in this sense, it is usually capitalized as Reflexions. The term's usage varies by region and discipline, and contemporary writing often favors "reflections" while retaining "reflexion" in historical quotes or specific contexts.