Why is injective called one-to-one?

Could you please elaborate on why the term "injective" is referred to as "one-to-one"? It seems like an interesting nomenclature choice that I'd like to understand better. Could you explain the mathematical basis behind this naming convention? Additionally, is there a specific reason why it's called injective rather than using other descriptors? I'm curious to know the historical context or any other relevant information that might shed light on this terminology. Thank you for taking the time to answer my question!