3 syllables: Sil, i, cone. Stress on Sil.
SIL-uh-kohn
/ˈsɪləˌkoʊn/
Silicone is pronounced SIL-uh-kohn (/ˈsɪləˌkoʊn/). It has three syllables (Sil-i-cone), with the stress on "Sil". Silicone is a synthetic polymer made of silicon, oxygen, carbon, and hydrogen that forms flexible, heat-resistant materials such as sealants, cookware, and medical implants. The term typically refers to two groups: silicone polymers (polysiloxanes) and silicone rubber, notable for durability, non-toxicity, and moisture resistance. In everyday usage, it often contrasts with silicone as a brand name or generic polymer family rather than specific pure silicon element.
nounSilicone is a synthetic polymer made of silicon, oxygen, carbon, and hydrogen that forms flexible, heat-resistant materials such as sealants, cookware, and medical implants. The term typically refers to two groups: silicone polymers (polysiloxanes) and silicone rubber, notable for durability, non-toxicity, and moisture resistance. In everyday usage, it often contrasts with silicone as a brand name or generic polymer family rather than specific pure silicon element.
How to Pronounce Silicone
"The chef used a silicone spatula that won't melt at high temperatures."
"Medical devices are often encased in medical-grade silicone for biocompatibility."
"The sealant cured to a flexible silicone rubber that prevents leaks."
Silicone is pronounced with the stress on the first syllable: /ˈsɪlɪˌkoʊn/ (US) or /ˈsɪlɪˌkəʊn/ (UK/AU). It sounds like SIL-ih-kohn, with a clear long vowel on the final syllable in most accents. The second syllable is a light /ɪ/, followed by a strong /oʊ/ or /əʊ/ glide into /n/. Emphasize the first syllable but keep the final syllable light and nasal-free for naturalness.
Common mistakes include misplacing stress (sih-LI-cone) and conflating with silicon (/ˈsɪlɪkən/). Also people sometimes drop the final /oʊ/ into a short /ə/ or /ʌ/; others mispronounce the middle /ɪ/ as a broad /ɛ/. Correction: keep stress on the first syllable, pronounce the second syllable with a short /ɪ/ followed by a clear /oʊ/ glide, and maintain the final /n/ without adding extra vowel sound.
In US, the final vowel often lands as /oʊ/, giving /ˈsɪlɪˌkoʊn/. UK/AU tends toward /ˈsɪlɪˌkəʊn/, with a slightly freer vowel in the second syllable and non-rhotic r-influences are not relevant here since /n/ is final. The rhoticity mainly affects vowels before r, which silicone lacks. So the main difference is vowel quality in the second syllable: /koʊn/ vs /kəʊn/.
The difficulty lies in the subtle vowel sequence of /ɪ/ followed by /oʊ/ and the rapid secondary stress on the open syllable before the final consonant. Speakers might neutralize the /oʊ/ to a schwa or shorten it, and some produce /ˈsɪlɪkən/ or /ˈsɪlɪˌkoʊn/ inconsistently. Focusing on keeping the /oʊ/ glide distinct and not flattening the second syllable makes it easier to produce clearly in real speech.
A unique aspect is the separation of the root stress from the chemical naming convention; many learners assume the second syllable carries strong stress but it remains light with the first syllable carrying primary stress. Also, the final nasal /n/ can be syllabic in fast speech if the vowel is weakened, so you might hear a reduced vowel or a nasalized ending in casual speech; keep it as a distinct /n/.
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The word silicone emerged in the 19th and 20th centuries from the scientific term siloxane, itself formed from the Latin sili- meaning ‘silicon’ and oxane, from the Greek oxys meaning ‘acid’ or ‘oxygenated’. Early chemists used silicone to describe silicon-oxygen compounds when the chemistry of silicon was being explored as an analogue to carbon chemistry. The root silicon (from Latin silicis, ‘flint’) was known in ancient times, but the silicone group developed as chemists linked silicon-oxygen chain structures (Si–O–Si) and methyl or phenyl substituents to form polymeric networks. The first known uses appeared in academic texts in the early 20th century, with notable work around polysiloxanes enabling flexible, heat-resistant polymers. Over subsequent decades, industrial chemistry standardized silicone polymers for sealants, elastomers, fluids, and gels, becoming ubiquitous in consumer goods and medical devices due to their stability, biocompatibility, and moldability.
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💡 These words have similar meanings to "Silicone" and can often be used interchangeably.
🔄 These words have opposite meanings to "Silicone" and show contrast in usage.
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Words that rhyme with "Silicone"
-ion sounds
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