Acnode

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Acnode \Ac"node\, n. [L. acus needle + E. node.] (Geom.)
     An isolated point not upon a curve, but whose co["o]rdinates
     satisfy the equation of the curve so that it is considered as
     belonging to the curve.
     [1913 Webster]