The Collaborative International Dictionary of English v.0.48:

analog computer \analog computer\ analogue computer \analogue
computer\n.
   a computer that represents information by continuously
   variable quantities (e.g., positions or voltages).
   [WordNet 1.5 +PJC]

WordNet (r) 3.0 (2006):

analogue computer
    n 1: a computer that represents information by variable
         quantities (e.g., positions or voltages) [syn: analog
         computer, analogue computer]

The Free On-line Dictionary of Computing (30 December 2018):

analogue computer
analog computer

    A machine or electronic circuit designed
   to work on numerical data represented by some physical
   quantity (e.g. rotation or displacement) or electrical
   quantity (e.g. voltage or charge) which varies continuously,
   in contrast to digital signals which are either 0 or 1.

   For example, the turning of a wheel or changes in voltage can
   be used as input.  Analogue computers are said to operate in
   real time and are used for research in design where many
   different shapes and speeds can be tried out quickly.  A
   computer model of a car suspension allows the designer to see
   the effects of changing size, stiffness and damping.

   (1995-05-01)