The act of buying or purchasing; a purchase or acquisition through payment.
From Latin emptio (a buying, purchase), derived from emere (to buy). The term entered English through legal and commercial terminology, preserving the original Latin form with English pronunciation and usage adapted to English grammar.
Emption is essentially a formal legal/commercial equivalent of 'buying'—you'll find it in historical commercial documents and legal texts, but it's been almost entirely replaced by the simpler word 'purchase' in modern English. It's a ghost of Roman legal language.
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