What is bit in full?

Excuse me, could you please clarify what you mean by "bit in full"? Are you referring to the smallest unit of a cryptocurrency, specifically Bitcoin, which is often abbreviated as "bit" or "BTC"? If so, the full term for the smallest divisible unit of Bitcoin is a satoshi, named in honor of the pseudonymous creator of Bitcoin, Satoshi Nakamoto. Alternatively, if you're asking about something else entirely, I'd be happy to provide more context or information to the best of my knowledge.