---
title: "BIP39 Word #561: ecology — Seed Phrase Mnemonic Word"
url: "https://bip39-phrase.com/bip39-word/ecology/"
language: "en"
updated: "2026-10-19T00:00:00+00:00"
---

Word #561 01000110000 

# ecology — BIP39 word #561

"**ecology**" is word #561 of the 2048 words in the official BIP39 English wordlist, between [echo](/bip39-word/echo/) and [economy](/bip39-word/economy/). In a seed phrase it stands for the 11-bit value `01000110000`, decimal index 560\. 

/ɪˈkɒləʤi/  · _noun:_ the study of how living things relate to their environment 

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

## Binary Representation

Three 1-bits and eight 0-bits; 165 of the 2048 indexes have exactly three 1-bits.

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

[ship](/bip39-word/ship/)[alcohol](/bip39-word/alcohol/)[gravity](/bip39-word/gravity/)[figure](/bip39-word/figure/)[evoke](/bip39-word/evoke/)[dragon](/bip39-word/dragon/)[dune](/bip39-word/dune/)[either](/bip39-word/either/)[educate](/bip39-word/educate/)[edge](/bip39-word/edge/)[economy](/bip39-word/economy/) 

Position

Hex Index

0x230

4-Letter Prefix

ecol

## About "ecology" in BIP39

- "ecology" has 7 letters, but the first four, **"ecol"**, already identify it, because **"eco"** also begins [economy](/bip39-word/economy/).
- **"ecol"** is unique only within the English list: it also begins ecologia in the [Portuguese list](/portuguese/), so a four-letter backup should say which list it uses.
- "ecology" appears in one of the 24 official English [test vectors](https://github.com/trezor/python-mnemonic/blob/master/vectors.json) of BIP39: vector #14 (word 15 of 18). 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 #14

[gravity](/bip39-word/gravity/) [machine](/bip39-word/machine/) [north](/bip39-word/north/) [sort](/bip39-word/sort/) [system](/bip39-word/system/) [female](/bip39-word/female/) [filter](/bip39-word/filter/) [attitude](/bip39-word/attitude/) [volume](/bip39-word/volume/) [fold](/bip39-word/fold/) [club](/bip39-word/club/) [stay](/bip39-word/stay/) [feature](/bip39-word/feature/) [office](/bip39-word/office/) ecology [stable](/bip39-word/stable/) [narrow](/bip39-word/narrow/) [fog](/bip39-word/fog/) 

## Word #561 in the Other 9 BIP39 Wordlists

[Czech](/czech/) kapitola 

[French](/french/) différer 

[Italian](/italian/) enduro 

[Japanese](/japanese/) けぬき 

[Korean](/korean/) 바람 

[Portuguese](/portuguese/) deboche 

[Spanish](/spanish/) don 

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

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

## Similar Words — Check Carefully During Recovery

Words sharing the first three letters "eco":

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

## More BIP39 Words Starting with "E"

[ #557 easily ](/bip39-word/easily/)[ #558 east ](/bip39-word/east/)[ #559 easy ](/bip39-word/easy/)[ #560 echo ](/bip39-word/echo/)[ #562 economy ](/bip39-word/economy/)[ #563 edge ](/bip39-word/edge/)[ #564 edit ](/bip39-word/edit/)[ #565 educate ](/bip39-word/educate/) 

[View all words starting with "E" ](/bip39-words/e/) 

## Seed phrase, key and recovery guides

- [BIP39 vs BIP32 vs BIP44: How the Seed Standards Fit Together](/crypto-seed-standards-bip39-vs-bip32-vs-bip44/)
- [How to Memorize a Seed Phrase: Color, Story and Palace Methods](/seed-phrase-memory/)
- [What Is a Seed Phrase? How a Recovery Phrase Works](/recovery-seed-phrase-guide/)

[ Full BIP39 Wordlist ](/)