Su*per"flu*ous (?), a. [L. superfluus overflowing; super over, above + fluere to flow. See Super-, and Fluent.]
More than is wanted or is sufficient; rendered unnecessary by superabundance; unnecessary; useless; excessive; as, a superfluous price.
An authority which makes all further argument or illustration superfluous.
Superfluous interval Mus., an interval that exceeds a major or perfect interval by a semitone.
Syn. -- Unnecessary; useless; exuberant; excessive; redundant; needless.
-- Su*per"flu*ous*ly, adv. -- Su*per"flu*ous*ness, n.
© Webster 1913.