A definition is a clear explanation of the meaning of a word, idea, or thing. It can also mean how sharp or detailed something appears, like in a photo or screen.
It comes from Latin “definitio,” meaning “a boundary, explanation,” from “definire,” “to limit, define,” from “de-” (completely) and “finis” (end, boundary). To define is to set the limits of what something is and is not.
A definition doesn’t just describe meaning—it draws a mental border around it. That’s why arguments often start with, “Well, it depends how you define it…”; whoever controls the definition controls the debate.
Complete word intelligence in one call. Free tier — 50 lookups/day.