I'm guessing they're using the scientific definition: "A distinctive characteristic of a living organism from dead organism or non-living thing, as specificall

I'm guessing they're using the scientific definition: "A distinctive characteristic of a living organism from dead organism or non-living thing, as specifically distinguished by the capacity to grow, metabolize, respond (to stimuli), adapt, and reproduce" - https://www.biology-online.org/dictionary/Life https://www.biology-online.org/dictionary/Life