To pronounce "pentadecahedron", say PENT-ad-ec-ah-edr-on — 6 syllables. Tap play below to hear it in four English accents, or practice it syllable by syllable.
pentadecahedron
Tap to hear · American accent
Accent
If an accent sounds the same, your device is missing that voice — it falls back to the closest one.
Speed
Syllable by syllable — tap each one
Record yourself saying pentadecahedron, then compare with the target. Your audio stays on this device — nothing is uploaded.
6
Syllables
15
Letters
PENT-ad-ec-ah-edr-on
Say it like
"pentadecahedron" has 6 syllables: pent-ad-ec-ah-edr-on.
"Pentadecahedron" has 6 syllables: pent · ad · ec · ah · edr · on.
Want the definition, translations into 8 languages, and read-aloud for full sentences?
Open “pentadecahedron” in the full dictionary →