- Full of use, advantage, or profit; producing, or having
power to produce, good; serviceable for any end or object; helpful
toward advancing any purpose; beneficial; profitable; advantageous; as,
vessels and instruments useful in a family; books useful for
improvement; useful knowledge; useful arts.
Useful life Useful life is an estimate of the expected productive life, also called service life, of the asset. Useful life may be expressed in terms of time, units of activity...