äußerer
äußerer is a German adjective meaning outer or external. It is used to describe something that lies on or relates to the outside of a object, area, or concept. The form äußerer appears in the masculine singular when the noun is in a position that takes the indefinite article or no article, for example ein äußerer Rand (an outer edge) or ein äußerer Eindruck (an external impression). When the definite article der/die/das is used, the ending changes according to standard German adjective declension, producing forms such as der äußere Rand.
Etymology and morphology: äußer is derived from außen, meaning outside. The suffix -er marks the masculine nominative
Usage: The term is common in everyday language and in technical registers. It frequently appears in physical,
Related terms: The antonym of äußerer is innerer, referring to the internal or inner side. The related
See also: outer/inner in German linguistic and semantic contrasts; outward-facing terminology in anatomy, geography, and design.