polymethylsilsesquioxane

/ˌpɒliˌmɛθəlˌsɪlsɛskwɪˈɒkseɪn/

noun

A synthetic silicone micro-powder used in skincare, makeup, and hair care products to improve texture, absorb oil, and blur the look of fine lines.

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Meanings

nounpolymethylsilsesquioxane (uncountable, abbreviation PMSQ)

abbreviation PMSQ

  1. uncountablechemistryA synthetic silicone micro-powder used in skincare, makeup, and hair care products to improve texture, absorb oil, and blur the look of fine lines.

Origin

From poly + methyl + silsesquioxane

Full word history & related roots →
Cite this entry
APA

polymethylsilsesquioxane. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/polymethylsilsesquioxane

MLA

“polymethylsilsesquioxane.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/polymethylsilsesquioxane. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “polymethylsilsesquioxane,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/polymethylsilsesquioxane.

Source: polymethylsilsesquioxane on Wiktionary, CC BY-SA 4.0.