Definition of unit

• n. - A single thing or person.
• n. - The least whole number; one.
• n. - A gold coin of the reign of James I., of the value of twenty shillings.
• n. - Any determinate amount or quantity (as of length, time, heat, value) adopted as a standard of measurement for other amounts or quantities of the same kind.
• n. - A single thing, as a magnitude or number, regarded as an undivided whole.