How to pronounce septillion
Say it like sep-TIL-yun. Septillion 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 septillion. Choose Slow to hear each sound clearly.
- sep
- TIL
- yun
- Main stress
- Lighter stress
- Unstressed
Septillion pronunciation, sound by sound
Read the parts left to right, then blend them together without pausing.
- sepKeep this part quick and light. The vowel is the "e" in bed.
- 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 septillion
American and British speakers say septillion in essentially the same way: /sɛpˈtɪljən/ in the US and /sɛpˈtɪljən/ in the UK.
British respelling: sep-TIL-yun.
What does septillion mean?
- A trillion trillion: 1 followed by 24 zeros, 10²⁴.
- A billion quintillion: 1 followed by 42 zeros, 10⁴².
Where does septillion come from?
From French septillion, from sept- (“seven”) + -illion.
Words that rhyme with septillion
Practicing rhymes is a quick way to lock in the vowel sound of septillion.
Questions about saying septillion
How do you pronounce septillion?
Say sep-TIL-yun. The American pronunciation is /sɛpˈtɪljən/. In British English it is /sɛpˈtɪljən/. Press play above to hear it at normal speed or slowly.
How many syllables are in septillion?
Septillion has three syllables, and the main stress falls on the second one (TIL). Broken into parts: sep · TIL · yun.
Do Americans and Brits say septillion the same way?
Almost exactly. The American form is /sɛpˈtɪljən/ and the British form is /sɛpˈtɪljən/, so you can use either pronunciation with any listener.