Word #642 01010000001

expand — BIP39 word #642

"expand" is word #642 of the 2048 words in the official BIP39 English wordlist, between exotic and expect. In a seed phrase it stands for the 11-bit value 01010000001, decimal index 641.

/ɪksˈpænd/ · verb: to become or make larger in size, number or amount

Russian: расширяться

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):

south awake ice dizzy flag feature fall eye expose expire exotic

Position

#642 of 2048

Hex Index

0x281

4-Letter Prefix

expa

About "expand" in BIP39

"expand" has 6 letters, but the first four, "expa", already identify it, because "exp" also begins expect, expire, explain, expose and express.
"expa" is unique only within the English list: it also begins expandir in the Portuguese list, so a four-letter backup should say which list it uses.