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

  • adj. Clearly expressed or presented; easy to understand: perspicuous prose.
  • adj. Expressing oneself clearly and effectively: a perspicuous lecturer.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Clearly expressed, easy to understand; lucid.
  • adj. Of a language or notation, such as that of formal propositional calculus: where the process of inference from premises to conclusion is explicitly laid out.
  • adj. Transparent; translucent.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Capable of being through; transparent; translucent; not opaque.
  • adj. Clear to the understanding; capable of being clearly understood; clear in thought or in expression; not obscure or ambiguous

from The Century Dictionary and Cyclopedia

  • Capable of being seen through; transparent; translucent.
  • Obvious; plainly to be seen; conspicuous; eveident.
  • Clear to the understanding; that may be easily apprehended or clearly understood; not obscure or ambiguous; lucid: as, a perspicuous statement.
  • Synonyms See perspicuity.

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

  • adj. (of language) transparently clear; easily understandable


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

From Latin perspicuus, from perspicere, to see through; see perspicacious.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin perspicuus, in turn from perspiciō ("see through").


  • Similarly, to some numerical and geometrical functions, that can be described and grasped easily, the combinators that are frequently encountered can be characterized as perspicuous transformations on terms.

    Combinatory Logic

  • Proofs should be "perspicuous," that is, the structure and flow of the proof's ideas should be graspable in large measure, and the over-arching ideas should be strung together with a series of lemmas to make the proof easy to follow in broad and detailed examination.

    The Strange Case of Richard Sternberg and His Apologists

  • The doctrine can, of course, expand even further to become a general principle of effective rhetoric or even of scientific language, where it appears under the rubric of clear, "perspicuous" representation, modeled on perspectival, rationally constructed imagery.

    Notes, Mitchell, "Ekphrasis and the Other"

  • The dialect of the Koreish was usually called the clear or "perspicuous" Arabic, but the Hamaritic dialect approached nearer to the purity of the mother Syriac.


  • "Review of Erasmus 'Preface" Luther answers Erasmus 'charge that the bible is not plain or "perspicuous" (hence the need to obey and submit to the authoritative interpretation of the Church)

    Stand Firm

  • It is often stated that Scripture is "perspicuous" (clear) and able to be understood in the main by the committed, regenerate layman, and that by comparing Bible passage with Bible passage, the truth can always be found.

    Biblical Evidence for Catholicism

  • But, somehow, for Obamalogists like DTM, all the overt quid pro quos won by the parasites IN “backroom deals” are betrayed by the expertly constructed rhetoric which reveal only to the most perspicuous reader of official texts, the super-coy machinations of O which will deliver HCR that is good HCR behind the backs of very powerful patrons who oppose HCR.

    Matthew Yglesias » Setback for Public Option Revival as Rockefeller Says No

  • The text was arranged in a perspicuous manner with clear divisions between chapters, items, and italicised rubrics.

    First Two Volumes of "Monumenta Ritualia Hungarica" Released

  • There has come to you from Allah a (new) light and a perspicuous Book - wherewith Allah (God) guides all who seek His good pleasure to ways of peace and safety, and leads them out of darkness, by His will, unto the light - guiding them to a path that is straight.

    Asad Khan: Spiritual Awakening & the Future of Our World

  • Amanda Roocroft, Emilia Marty in this first revival of Christopher Alden's clear, perspicuous 2006 English National Opera production, is a touch young and fresh for the part.

    In London, the ageless and enduring 'Makropulos Case'


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