Espiratoria
Espiratoria is a Spanish term formed as the feminine of espiratorio, from the verb espirar (to breathe) with the suffix that yields adjectives and nouns related to a function or process. In contemporary usage, espiratoria is primarily an adjective meaning related to respiration or the respiratory system. It appears in technical or scientific texts in compounds describing breathing-related processes, devices, or phenomena, though in many contexts espiratorio or more common terms like respiratorio are preferred.
As a standalone noun, espiratoria is rare. When it does appear as a noun, it is typically
Etymology: from espirar, to breathe, plus the suffix -torio/-toria, yielding forms related to function or equipment.
See also: espiratorio, respiratorio, espiración, respiración, aparato respiratorio, sistema respiratorio.