To pronounce "prostonium", say PROST-on-ium — 3 syllables. Tap play below to hear it in four English accents, or practice it syllable by syllable.
prostonium
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3
Syllables
10
Letters
PROST-on-ium
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"prostonium" has 3 syllables: prost-on-ium.
"Prostonium" has 3 syllables: prost · on · ium.
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