The act or process of extending; the state of being extended or stretched out.
From Latin extensus (stretched) + -ure (noun suffix forming abstract nouns). Common in Middle English and Early Modern English, it appears in legal and scientific texts referring to the act of stretching or the condition of being stretched.
This word is almost extinct in modern English, but 'extensure' once appeared in legal documents to describe the stretching of property boundaries or the extension of someone's rights—it's a word that lost the competition with 'extension.'
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