M

Merge conflict

Occurs when two branches have made conflicting changes to the same code and manual review is required.

Mnemonic

A mnemonic is typically a sequence of 12 or 24 randomly generated words used to create and recover a Bitcoin wallet

MuSig2

An improvement over the original MuSig protocol, MuSig2 is a cryptographic protocol for creating Schnorr-based multi-signatures in Bitcoin.