The Collaborative International Dictionary of English v.0.48:
Continual \Con*tin"u*al\, a. [OE. continuel, F. continuel. See
   Continue.]
   1. Proceeding without interruption or cesstaion; continuous;
      unceasing; lasting; abiding.
      [1913 Webster]
            He that is of a merry heart hath a continual feast.
                                                  --Prov. xv.
                                                  15.
      [1913 Webster]
   2. Occuring in steady and rapid succession; very frequent;
      often repeated.
      [1913 Webster]
            The eye is deligh by a continental succession of
            small landscapes.                     --W. Irwing.
      [1913 Webster]
   Continual proportionals (Math.), quantities in continued
      proportion. --Brande & C.
   Syn: Constant; prepetual; incessant; unceasing;
        uninterrupted; unintermitted; continuous. See
        Constant, and Continuous.
        [1913 Webster]