How to pronounce octodecillion
Say it like ok-toh-duh-SIL-ee-un. Octodecillion has six syllables, and the main stress falls on the fourth one (SIL).
Click the play button next to American or British to hear how to pronounce octodecillion. Choose Slow to hear each sound clearly.
- ok
- toh
- duh
- SIL
- ee
- un
- Main stress
- Lighter stress
- Unstressed
Octodecillion pronunciation, sound by sound
Read the parts left to right, then blend them together without pausing.
- okGive this part a little weight. The vowel is the "ah" in father.
- tohKeep this part quick and light. The vowel is the "o" in go.
- duhKeep this part quick and light. The vowel is the relaxed "uh" in about.
- SILSay this part loudest and longest. The vowel is the "i" in sit.
- eeKeep this part quick and light. The vowel is the "ee" in see.
- unKeep this part quick and light. The vowel is the relaxed "uh" in about.
American vs British pronunciation of octodecillion
- The short o is rounded in British English (as in "hot"), but open and unrounded in American English.
- The long o starts further forward in British English, closer to "uh-oo" than the American "oh".
British respelling: ok-toh-duh-SIL-ee-un.
What does octodecillion mean?
- 10⁵⁷.
- 10¹⁰⁸.
Where does octodecillion come from?
From Latin octodec(im) (“eighteen”) + -illion; compare tredecillion, quattuordecillion, etc.
Words that rhyme with octodecillion
Practicing rhymes is a quick way to lock in the vowel sound of octodecillion.
Questions about saying octodecillion
How do you pronounce octodecillion?
Say ok-toh-duh-SIL-ee-un. The American pronunciation is /ˌɑktoʊdəˈsɪliən/. In British English it is /ˌɒktəʊdəˈsɪliən/. Press play above to hear it at normal speed or slowly.
How many syllables are in octodecillion?
Octodecillion has six syllables, and the main stress falls on the fourth one (SIL). Broken into parts: ok · toh · duh · SIL · ee · un.
Is octodecillion pronounced differently in British English?
Yes. The short o is rounded in British English (as in "hot"), but open and unrounded in American English. The British form is /ˌɒktəʊdəˈsɪliən/ (ok-toh-duh-SIL-ee-un).