Word #515 01000000010

doctor — BIP39 word #515

"doctor" is word #515 of the 2048 words in the official BIP39 English wordlist, between dizzy and document. In a seed phrase it stands for the 11-bit value 01000000010, decimal index 514.

/ˈdɒktə/ · noun: a person trained and licensed to treat sick or injured people

Russian: доктор

Binary Representation

Two 1-bits and nine 0-bits; 55 of the 2048 indexes have exactly two 1-bits.

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

scare able gate expect embark dust drastic donor dolphin divorce document

Position

#515 of 2048

Hex Index

0x202

4-Letter Prefix

doct

About "doctor" in BIP39

"doctor" has 6 letters, but the first four, "doct", already identify it, because "doc" also begins document.
"doct" is unique only within the English list: it also begins docteur in the French list, so a four-letter backup should say which list it uses.
"doctor" appears in three of the 24 official English test vectors of BIP39: vectors #3 (word 6 of 12), #7 (words 6 and 14 of 18) and #11 (words 6, 14 and 22 of 24). Every official vector passes the checksum checker, and How BIP39 works shows how the entropy turns into such words.

Official test vector #3

letter advice cage absurd amount doctor acoustic avoid letter advice cage above