pentamethylcyclopentasiloxane

/ˌpɛntəˌmɛθəlˌsaɪkləʊˌsaɪləˈsɒkseɪn/

noun

A cyclic organosilicon compound consisting of a five-membered ring of alternating silicon and oxygen atoms, with five methyl groups attached to the silicon atoms. It is primarily used as a precursor in the production of specialized silicones and polymers.

Scrabble 55
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Meanings

nounpentamethylcyclopentasiloxane (usually uncountable, plural pentamethylcyclopentasiloxanes)

plural pentamethylcyclopentasiloxanes

  1. uncountableusuallychemistryA cyclic organosilicon compound consisting of a five-membered ring of alternating silicon and oxygen atoms, with five methyl groups attached to the silicon atoms. It is primarily used as a precursor in the production of specialized silicones and polymers.

Origin

penta- + methyl- + cyclo- + penta- + siloxane

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Cite this entry
APA

pentamethylcyclopentasiloxane. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/pentamethylcyclopentasiloxane

MLA

“pentamethylcyclopentasiloxane.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/pentamethylcyclopentasiloxane. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “pentamethylcyclopentasiloxane,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/pentamethylcyclopentasiloxane.

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