How to pronounce octillion
Say it like ok-TIL-yun. Octillion has three syllables, and the main stress falls on the second one (TIL).
Click the play button next to American or British to hear how to pronounce octillion. Choose Slow to hear each sound clearly.
- ok
- TIL
- yun
- Main stress
- Lighter stress
- Unstressed
Octillion pronunciation, sound by sound
Read the parts left to right, then blend them together without pausing.
- okKeep this part quick and light. The vowel is the "ah" in father.
- TILSay this part loudest and longest. The vowel is the "i" in sit.
- yunKeep this part quick and light. The vowel is the relaxed "uh" in about.
American vs British pronunciation of octillion
- American English uses 3 syllables and British English 4.
- The short o is rounded in British English (as in "hot"), but open and unrounded in American English.
British respelling: ok-TIL-ee-un.
What does octillion mean?
- A thousand trillion trillion, a billion billion billion: 1 followed by 27 zeros, 10²⁷.
- A trillion quintillion: 1 followed by 48 zeros, 10⁴⁸.
Where does octillion come from?
From French octillion.
Words that rhyme with octillion
Practicing rhymes is a quick way to lock in the vowel sound of octillion.
Questions about saying octillion
How do you pronounce octillion?
Say ok-TIL-yun. The American pronunciation is /ɑkˈtɪljən/. In British English it is /ɒkˈtɪliːən/. Press play above to hear it at normal speed or slowly.
How many syllables are in octillion?
Octillion has three syllables, and the main stress falls on the second one (TIL). Broken into parts: ok · TIL · yun.
Is octillion pronounced differently in British English?
Yes. American English uses 3 syllables and British English 4. The British form is /ɒkˈtɪliːən/ (ok-TIL-ee-un).