One who is expiring or about to die; something in the process of expiring or ending.
From Latin expirans, present participle of expirare (to breathe out). This rare term is formed as a present participle used as a noun or adjective, emphasizing the ongoing process of expiration.
In phonetics, an 'expirant' is actually a technical term for a type of consonant sound produced with continuous airflow—the word's original 'breathing out' meaning got borrowed into sound science.
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