Perspiration

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early 17th century: from French, from perspirer (see perspire).

wiktionary

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Borrowed from late Middle French perspiration, from perspirer(“perspire”), from Latin perspirare(“to blow or breathe constantly”), from per(“through”) + spirare(“to breathe, blow”) Morphologically perspire +‎ -ation

etymonline

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perspiration (n.)

1610s, "a breathing through," a sense now obsolete, from French perspiration (1560s), noun of action from perspirer "perspire," from Latin perspirare "blow or breathe constantly," from per "through" (from PIE root *per- (1) "forward," hence "through") + spirare "to breathe, blow" (see spirit (n.)). Applied by 1620s to "excretion of invisible moistures through the skin," hence its later use as a euphemism for "sweat" (1725).