Any compound containing three acetate groups(noun)
A fibre manufactured from cellulose triacetate(noun)
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Use "triacetate" in a sentence
"While some methods can be finicky with certain materials, such as triacetate (used in evening gowns), none of our difficult wool, linen or beaded garments shrunk or were damaged."
"Try nail polish remover, but do not use on acetate or triacetate fabrics."
"Both fibers, but triacetate more than acetate, tend to build up static unless they have received antistatic treatments."