Serving to bind, constrain, or restrict tightly; having the quality of producing astriction.
From 'astriction' plus the adjectival suffix '-ive', meaning 'tending to' or 'having the quality of.' Used in medical and legal terminology.
Astringent medicines are called 'astrictive' because they literally bind your mouth tissues—the word describes the physical sensation of tightness, which is why astrictive is related to astringent!
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