from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Thinkable; conceivable: Since the discovery of the vaccine, annihilation of the disease is at last cogitable.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. thinkable, conceivable, able to be imagined.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Capable of being brought before the mind as a thought or idea; conceivable; thinkable.

from The Century Dictionary and Cyclopedia

  • Capable of being thought; that may be apprehended by thinking; thinkable; not logically absurd.
  • n. Anything capable of being the subject of thought.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. capable of being thought about


From Latin cogitabilis, from cogito. (Wiktionary)


  • Philosophers have always talked of an absolutely necessary being, and have nevertheless declined to take the trouble of conceiving whether -- and how -- a being of this nature is even cogitable, not to mention that its existence is actually demonstrable.

    The Critique of Pure Reason

  • Understanding cannot originate even the outline of any of these sciences, even when connected with the highest logical use of reason, that is, all cogitable syllogisms - for the purpose of proceeding from one object (phenomenon) to all others, even to the utmost limits of the empirical synthesis.

    The Critique of Pure Reason

  • That is, it is a conception without an object (ens rationis), like noumena, which cannot be considered possible in the sphere of reality, though they must not therefore be held to be impossible -- or like certain new fundamental forces in matter, the existence of which is cogitable without contradiction, though, as examples from experience are not forthcoming, they must not be regarded as possible.

    The Critique of Pure Reason

  • For the world is a sum of phenomena; there must, therefore, be some transcendental basis of these phenomena, that is, a basis cogitable by the pure understanding alone.

    The Critique of Pure Reason

  • An ideal is not even given as a cogitable object, and therefore cannot be inscrutable; on the contrary, it must, as a mere idea, be based on the constitution of reason itself, and on this account must be capable of explanation and solution.

    The Critique of Pure Reason

  • There are only two modes of causality cogitable -- the causality of nature or of freedom.

    The Critique of Pure Reason

  • In proximity with such a lawless faculty of freedom, a system of nature is hardly cogitable; for the laws of the latter would be continually subject to the intrusive influences of the former, and the course of phenomena, which would otherwise proceed regularly and uniformly, would become thereby confused and disconnected.

    The Critique of Pure Reason

  • Cosmology; and the thing which contains the highest condition of the possibility of all that is cogitable (the being of all beings) is the object-matter of all Theology.

    The Critique of Pure Reason

  • Therefore, "the Conditioned is that which is alone conceivable or cogitable; the Unconditioned, that which is inconceivable or incogitable.

    Christianity and Greek Philosophy or, the relation between spontaneous and reflective thought in Greece and the positive teaching of Christ and His Apostles

  • "If the two contradictory extremes are equally incogitable, yet include a cogitable mean, why insist upon the necessity of accepting either extreme?

    Christianity and Greek Philosophy or, the relation between spontaneous and reflective thought in Greece and the positive teaching of Christ and His Apostles


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