To pronounce "onium", say ON-ium — 2 syllables. Tap play below to hear it in four English accents, or practice it syllable by syllable.
onium
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Accent
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2
Syllables
5
Letters
ON-ium
Say it like
"onium" has 2 syllables: on-ium. It rhymes with pandemonium and harmonium, if that helps it stick.
Practicing rhymes trains the same ending sounds.
"Onium" has 2 syllables: on · ium.
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