from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Of, relating to, in accordance with, or of the nature of logic.
  • adjective Based on earlier or otherwise known statements, events, or conditions; reasonable.
  • adjective Reasoning or capable of reasoning in a clear and consistent manner.

from The Century Dictionary.

  • Of or pertaining to logic; used or taught in logic: as, logical subtleties.
  • According to the principles of logic; so stated or conceived, as an argument, that the form guarantees its validity; unobjectionable from the point of view of logic; consistent: as, logical reasoning; a logical division of a subject; a logical definition.
  • Skilled in logic; furnished with logic; given to considering the processes of reason as to their forms or genera, and critically as to their validity and cogency: applied especially to an analytical mind or a methodical habit.
  • The division of a genus into species.
  • Self-consistency.
  • Synonyms Dialectic.
  • Coherent, consistent.
  • Analytical, methodical.
  • noun Used only in the phrase little (small) logicals.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective Of or pertaining to logic; used in logic.
  • adjective According to the rules of logic
  • adjective Skilled in logic; versed in the art of thinking and reasoning.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective not comparable In agreement with the principles of logic.
  • adjective Reasonable.
  • adjective not comparable Of or pertaining to logic.
  • adjective computing Non-physical or conceptual yet underpinned by something physical or actual.

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

  • adjective capable of thinking and expressing yourself in a clear and consistent manner
  • adjective based on known statements or events or conditions
  • adjective marked by an orderly, logical, and aesthetically consistent relation of parts
  • adjective capable of or reflecting the capability for correct and valid reasoning


from Wiktionary, Creative Commons Attribution/Share-Alike License

logic +‎ -al


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  • or logicate?

    June 29, 2009

  • Spock would use this word a lot in the ld Star Trek series.

    July 27, 2012