• synonyms


See more synonyms for flange on Thesaurus.com
  1. a projecting rim, collar, or ring on a shaft, pipe, machine housing, etc., cast or formed to give additional strength, stiffness, or supporting area, or to provide a place for the attachment of other objects.
  2. a broad ridge or pair of ridges projecting from the edge of a rolled metal shape generally at right angles, in order to strengthen or stiffen it.
  3. a ring or collar, usually provided with holes for bolts, and screwed or welded over the end of a tube or pipe to permit other objects to be attached to it.
  4. (in plumbing) a plate or flat ring bolted to the flange at the end of a length of pipe to close the end or to connect it with the flange of another such length: blind flange; spectacle flange.
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verb (used without object), flanged, flang·ing.
  1. to project like, or take the form of, a flange.
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Origin of flange

1425–75; late Middle English flaunche side charge (on shield face) < Middle French flanche, feminine of flanc flank
Related formsflange·less, adjectiveflang·er, nounun·flanged, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for flange

rim, spout, projection, border, nozzle, overlap, portal, brim, flare, margin, labium, flange, labrum

Examples from the Web for flange

Historical Examples of flange

  • A small groove is cut on a flange, and a rubber ring, of about 1⁄4-in.

    Gas and Oil Engines, Simply Explained

    Walter C. Runciman

  • The flange is held securely in the base by eight 3/4-inch cap-screws.

    Steam Turbines

    Hubert E. Collins

  • Fig. 57, showing a development of both stop and flange, ditto, ditto.

    The Evolution of Culture

    Augustus Henry Lane-Fox Pitt-Rivers

  • This makes a jacket of water between the flange and sides of the canner.

  • The Wheels are made from the flange ends of the large spools.

British Dictionary definitions for flange


  1. a projecting disc-shaped collar or rim on an object for locating or strengthening it or for attaching it to another object
  2. a flat outer face of a rolled-steel joist, esp of an I- or H-beam
  3. a tool for forming a flange
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  1. (tr) to attach or provide (a component) with a flange
  2. (intr) to take the form of a flange
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Derived Formsflanged, adjectiveflangeless, adjectiveflanger, noun

Word Origin for flange

C17: probably changed from earlier flaunche curved segment at side of a heraldic field, from French flanc flank
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for flange


1680s, of unknown origin, perhaps related to Old French flanche "flank, side," fem. of flanc (see flank (n.)).

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Online Etymology Dictionary, © 2010 Douglas Harper

flange in Medicine


  1. A projecting rim or edge.
  2. The part of the denture base that extends from the cervical ends of the teeth to the border of the denture.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.