tri·​ac·​e·​tate (ˌ)trī-ˈa-sə-ˌtāt How to pronounce triacetate (audio)
: an acetate containing three CH3COO− groups
: a textile fiber or fabric consisting of cellulose that is completely or almost completely acetylated

Examples of triacetate in a Sentence

Recent Examples on the Web These instructions are for machine- or hand-washable fabrics such as cotton, denim, linen, nylon, polyester, and spandex; if the care tag says that fabric content includes rayon, silk, triacetate, or wool, the shirt will typically need to be dry cleaned. Jolie Kerr, Better Homes & Gardens, 5 July 2022 Cotton, linen, acetate and triacetate also have a high burning rate but this can be alleviated by the application of flame-retardant chemical additives. oregonlive, 15 Aug. 2022 This Everlane dress is made of triacetate fabric, which is known for being smooth and crease-resistant and ideal for traveling. Emma Seymour, Good Housekeeping, 15 July 2022 Note: These instructions are for fabrics that can be safely washed in water; fabrics that cannot tolerate water, such as rayon, silk, or triacetate, should be dry cleaned. Jolie Kerr, Better Homes & Gardens, 7 July 2022 The game was shot on triacetate film by Indiana University's Audio-Visual Center, which used to film important Indiana high school sports competitions for distribution to high school coaches for use as teaching aids. Will Higgins, Indianapolis Star, 23 Jan. 2018 Authorities suspect the packages held triacetate triperoxide, or TATP, an explosive that has been used in terrorist attacks, Assistant U.S. Attorney Craig Gabriel said in U.S. District Court in Portland. Everton Bailey Jr.,, 27 Oct. 2017 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'triacetate.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


International Scientific Vocabulary

First Known Use

1895, in the meaning defined at sense 1

Time Traveler
The first known use of triacetate was in 1895

Dictionary Entries Near triacetate

Cite this Entry

“Triacetate.” Dictionary, Merriam-Webster, Accessed 24 Sep. 2023.

Kids Definition


tri·​ac·​e·​tate (ˈ)trī-ˈas-ə-ˌtāt How to pronounce triacetate (audio)
: a textile fiber or fabric made by the chemical addition of acetate groups to cellulose

Medical Definition


tri·​ac·​e·​tate (ˈ)trī-ˈas-ə-ˌtāt How to pronounce triacetate (audio)
: an acetate containing three CH3COO groups
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