D defs.my
Entry 3 senses Webster, 1913

Beneficial

/bĕnəfĭsh'əl/ · Ben·e·fi·cial · IPA /ˌbɛnəˈfɪʃəl/
01 a. Conferring benefits; useful; profitable; helpful; advantageous; serviceable; contributing to a valuable end; -- followed by to.
  1. 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. 2.
    Receiving, or entitled to have or receive, advantage, use, or benefit; as, the beneficial owner of an estate.(Law)
  3. 3.
    King.[Obs.]
Syn. See Advantage.