Webster's Revised Unabridged Dictionary · 1913

Beneficial

Beneficial ({not transcribed}) , adjective

[Compare French bénéficial, Late Latin beneficialis.]

1.
Conferring benefits; useful; profitable; helpful; advantageous; serviceable; contributing to a valuable end; -- followed by to.
The war which would have been most beneficial to us. — Swift
2.
(Law) Receiving, or entitled to have or receive, advantage, use, or benefit; as, the beneficial owner of an estate. — Kent
3.
King. [Obsolete]
A beneficial foe. — B. Jonson