---
title: "BIP39 Word #1269: ozone — Seed Phrase Mnemonic Word"
url: "https://bip39-phrase.com/bip39-word/ozone/"
language: "en"
updated: "2026-10-19T00:00:00+00:00"
---

Word #1269 10011110100 

# ozone — BIP39 word #1269

"**ozone**" is word #1269 of the 2048 words in the official BIP39 English wordlist, between [oyster](/bip39-word/oyster/) and [pact](/bip39-word/pact/). In a seed phrase it stands for the 11-bit value `10011110100`, decimal index 1268\. 

/ˈəʊzəʊn/  · _noun:_ a form of oxygen whose atmospheric layer absorbs harmful ultraviolet rays 

[Russian](/ru/ "The BIP39 wordlist with Russian translations"): озон 

## Binary Representation

Six 1-bits and five 0-bits; 462 of the 2048 indexes have exactly six 1-bits.

One wrong bit turns it into (leftmost bit first):

[burden](/bip39-word/burden/)[teach](/bip39-word/teach/)[salon](/bip39-word/salon/)[model](/bip39-word/model/)[notable](/bip39-word/notable/)[once](/bip39-word/once/)[orient](/bip39-word/orient/)[panel](/bip39-word/panel/)[own](/bip39-word/own/)[paddle](/bip39-word/paddle/)[pact](/bip39-word/pact/) 

Position

Hex Index

0x4F4

4-Letter Prefix

ozon

## About "ozone" in BIP39

- Two letters are enough: no other BIP39 word begins with **"oz"**, which makes "ozone" one of only 34 words that can be told apart this early.
- The same spelling is in the [French BIP39 wordlist](/french/), but as word #1410 (index 1409), not #1269\. A wallet set to French reads "ozone" as **10110000001** instead of **10011110100**, and decodes index 1268 as "monument".
- **"ozon"** is unique only within the English list: it also begins ozono in the [Spanish list](/spanish/), so a four-letter backup should say which list it uses.
- "ozone" appears in one of the 24 official English [test vectors](https://github.com/trezor/python-mnemonic/blob/master/vectors.json) of BIP39: vector #13 (word 1 of 12). Every official vector passes the [checksum checker](/bip39-checksum-checker/), and [How BIP39 works](/how-bip39-works/) shows how the entropy turns into such words.

Official test vector #13

ozone [drill](/bip39-word/drill/) [grab](/bip39-word/grab/) [fiber](/bip39-word/fiber/) [curtain](/bip39-word/curtain/) [grace](/bip39-word/grace/) [pudding](/bip39-word/pudding/) [thank](/bip39-word/thank/) [cruise](/bip39-word/cruise/) [elder](/bip39-word/elder/) [eight](/bip39-word/eight/) [picnic](/bip39-word/picnic/) 

## Word #1269 in the Other 9 BIP39 Wordlists

[Czech](/czech/) pokoj 

[French](/french/) monument 

[Italian](/italian/) pesista 

[Japanese](/japanese/) ておくれ 

[Korean](/korean/) 원고 

[Portuguese](/portuguese/) mexicano 

[Spanish](/spanish/) obra 

[Traditional Chinese](/chinese-traditional/) 蒙 

[Simplified Chinese](/chinese-simplified/) 蒙 

## Similar Words — Check Carefully During Recovery

 One BIP39 word differs from "ozone" by just a single letter — the most common source of typos when a seed phrase is entered by hand: 

[zone](/bip39-word/zone/) 

## More BIP39 Words Starting with "O"

[ #1215 oak ](/bip39-word/oak/)[ #1216 obey ](/bip39-word/obey/)[ #1217 object ](/bip39-word/object/)[ #1218 oblige ](/bip39-word/oblige/)[ #1265 own ](/bip39-word/own/)[ #1266 owner ](/bip39-word/owner/)[ #1267 oxygen ](/bip39-word/oxygen/)[ #1268 oyster ](/bip39-word/oyster/) 

[View all words starting with "O" ](/bip39-words/o/) 

## Seed phrase, key and recovery guides

- [xpub, ypub and zpub: Extended Public Keys Explained](/xpub-ypub-zpub/)
- [SLIP-39 vs BIP39: Shamir Backup and 20-Word Shares Explained](/slip39-vs-bip39/)
- [Why You Should Never Create Your Own Seed Phrase](/why-you-should-never-create-your-own-seed-phrase/)

[ Full BIP39 Wordlist ](/)