Endofan

Endofan is a term that does not have a single, widely recognized meaning. It appears sporadically in online discussions and product naming, typically as a compound or as a proper noun. Because there is no standard definition, interpretation depends on context.

In fan and media communities, endofan is sometimes used to describe a person who has ceased to be a fan of a particular franchise or public figure, a process sometimes called unfandom or de-fandom. This usage is informal and varies by community; it is not a formal term in literature or journalism.

In engineering and manufacturing, the phrase end fan or end-mounted fan is used to refer to a fan placed at the end of a duct or enclosure to move air. Some sources spell the term as endofan in catalog copy or model names, but this spelling is less common and not standard in technical writing; engineers usually use end-mounted fan or end-of-duct fan.

Commercially, "Endofan" may be encountered as a brand name, model designation, or product line, independent of the plain-language meaning. In such cases, the meaning is determined by the manufacturer's specifications.

Etymology: the term likely derives from combining "end" and "fan" or from branding conventions, but there is no authoritative origin due to its informal and scattered usage. See also unfandom, de-fandom; fan (in HVAC); end-mounted fan.