from The Century Dictionary.

  • Having two plane surfaces perfectly parallel to each other.


Sorry, no etymologies found.


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  • Moreover, every demonstration proves a predicate of a subject as attaching or as not attaching to it, but in definition one thing is not predicated of another; we do not, e.g. predicate animal of biped nor biped of animal, nor yet figure of plane-plane not being figure nor figure plane.

    Posterior Analytics

  • There are several kinds of mating pairs such as plane-plane, cylinder-cylinder, and cylinder-slot.

    Machine Design -

  • An evaluation of the design's mating pairs reveals two plane-plane matings and one cylinder-cylinder mating.

    Machine Design -


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