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

  • n. One's name as written by oneself.
  • n. The act of signing one's name.
  • n. A distinctive mark, characteristic, or sound indicating identity: A surprise ending is the signature of an O. Henry short story.
  • n. Medicine The part of a physician's prescription containing directions to the patient.
  • n. Music A sign used to indicate key.
  • n. Music A sign used to indicate tempo.
  • n. Printing A letter, number, or symbol placed at the bottom of the first page on each sheet of printed pages of a book as a guide to the proper sequence of the sheets in binding.
  • n. Printing A large sheet printed with four or a multiple of four pages that when folded becomes a section of the book.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A person’s autograph name.
  • n. The act of signing one's name.
  • n. That part of a doctor’s prescription containing directions for the patient.
  • n. Signs on the stave indicating key and tempo
  • n. A group of four (or a multiple of four) pages printed such that, when folded, become a section of a book
  • n. A pattern used for matching the identity of a virus, the parameter types of a method, etc.
  • n. Data attached to a message that guarantees that the message originated from its claimed source.
  • n. A mark or sign of implication.
  • adj. distinctive, characteristic indicative of identity

from the GNU version of the Collaborative International Dictionary of English

  • n. A sign, stamp, or mark impressed, as by a seal.
  • n. Especially, the name of any person, written with his own hand, employed to signify that the writing which precedes accords with his wishes or intentions; a sign manual; an autograph.
  • n. An outward mark by which internal characteristics were supposed to be indicated.
  • n. A resemblance between the external characters of a disease and those of some physical agent, for instance, that existing between the red skin of scarlet fever and a red cloth; -- supposed to indicate this agent in the treatment of the disease.
  • n. The designation of the key (when not C major, or its relative, A minor) by means of one or more sharps or flats at the beginning of the staff, immediately after the clef, affecting all notes of the same letter throughout the piece or movement. Each minor key has the same signature as its relative major.
  • n.
  • n. A letter or figure placed at the bottom of the first page of each sheet of a book or pamphlet, as a direction to the binder in arranging and folding the sheets.
  • n. The printed sheet so marked, or the form from which it is printed.
  • n. That part of a prescription which contains the directions to the patient. It is usually prefaced by S or Sig. (an abbreviation for the Latin signa, imperative of signare to sign or mark).
  • transitive v. To mark with, or as with, a signature or signatures.

from The Century Dictionary and Cyclopedia

  • To mark out; distinguish.
  • n. A distinguishing sign, mark, or manifestation; an indicative appearance or characteristic, either physical or mental; a condition or quality significant of something: as, the signatures of a person's temperament seen in his face.
  • n. Specifically An external natural marking upon, or a symbolical appearance or characteristic of, a plant, mineral, or other object or substance, formerly supposed by the Paracelsians (and still by some ignorant persons) to indicate its special medicinal quality or appropriate use.
  • n. The name of a person, or something used as representing his name, affixed or appended to a writing or the like, either by himself or by deputy, as a verification, authentication, or assent (as to a petition or a pledge).
  • n. In Scots law, a writing formerly prepared and presented by a writer to the signet to the baron of exchequer, as the ground of a royal grant to the person in whose name it was presented.
  • n. A letter or figure placed by the printer at the foot of the first page of every section or gathering of a book.
  • n. Hence A sheet; especially, in bookbinders' use, a sheet after it has been folded and is ready to be gathered.
  • n. In musical notation, the signs placed at the beginning of a staff to indicate the key (tonality) and the rhythm of a piece.
  • n. In entomology, a mark resembling a letter; one of the marks of a signate surface.

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

  • n. the sharps or flats that follow the clef and indicate the key
  • n. a sheet with several pages printed on it; it folds to page size and is bound with other signatures to form a book
  • n. a melody used to identify a performer or a dance band or radio/tv program
  • n. your name written in your own handwriting
  • n. a distinguishing style


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

French, from Old French, from Medieval Latin signātūra, from Latin signātus, past participle of signāre, to mark, from signum, sign; see sign.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From French signature, from Latin signatura, future passive periphrastic of verb signare, "to sign", from signum, "sign", + -tura, feminine of -turus, future passive periphrastic suffix.



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  • In bookbinding, a printed sheet of paper that's been folded to size and ready for sewing. Depending on the book's size, it might be folded in half, fourths, eighths, sixteenths, thirty-seconds, or more.

    February 22, 2007