Definition of octamethylcyclotetrasiloxane in English:

octamethylcyclotetrasiloxane

noun

Chemistry
  • A colourless oily liquid compound with a cyclic tetrameric structure, [(CH₃)₂SiO]₄, that is an intermediate in the manufacture of many silicones.

Origin

1940s. From octa- + methyl + cyclo- + tetra- + siloxane.

Pronunciation

octamethylcyclotetrasiloxane

/ˌɒktəmɛθʌɪlˌsʌɪkləʊtɛtrasɪˈlɒkseɪn/