The minimum necessary amount or scope required to achieve a purpose; the bare minimum without extras.
安全対策は必要最小限の追加で済ませた方が迅速だ。
It's faster to handle safety measures with only the minimum necessary additions.
旅行の荷物は必要最小限にまとめて軽くした。
I packed my luggage down to the bare minimum to make it light.
予算が限られているので、設備は必要最小限で始める予定だ。
With a limited budget, we plan to start with only the minimal necessary equipment.