[ ik-sten-der ]
/ ɪkˈstɛn dər /


a substance added to another substance, as to paint or food, to increase its volume or bulk: to add cereal and soy protein to hamburger as extenders.
Photography. See under converter(def 8).

Origin of extender

First recorded in 1605–15; extend + -er1

Definition for extender (2 of 2)


or con·ver·tor

[ kuh n-vur-ter ]
/ kənˈvɜr tər /


Origin of converter

First recorded in 1525–35; convert1 + -er1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for extender

  • It was apparent by that time that the extender would never be anything in a printing office but a psychological monstrosity.

    Nine Men in Time|Noel Miller Loomis
  • This extender can be prepared 12 to 24 hours before use if it is stored at refrigerator temperature.

  • I shook hands with each one of the High-Pocketses as they filed into the extender.

    Nine Men in Time|Noel Miller Loomis

British Dictionary definitions for extender (1 of 2)

/ (ɪkˈstɛndə) /


a person or thing that extends
a substance, such as French chalk or china clay, added to paints to give them body and decrease their rate of settlement
a substance added to glues and resins to dilute them or to modify their viscosity
a substance added to elastomers to assist the plasticizer
printing the part of certain lower-case letters that extends either above (the ascender) or below (the descender) the body of the letter

British Dictionary definitions for extender (2 of 2)



/ (kənˈvɜːtə) /


a person or thing that converts
  1. a device for converting alternating current to direct current or vice versa
  2. a device for converting a signal from one frequency to another or from analogue to digital forms
a vessel in which molten metal is refined, using a blast of air or oxygenSee also Bessemer converter, L-D converter
computing a device for converting one form of coded information to another, such as an analogue-to-digital converter
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

Scientific definitions for extender

[ kən-vûrtər ]

An electrical device that changes the form of an electric signal or power source, as by converting alternating current to direct current, or an analog signal to a digital signal. Compare rectifier transformer.
An electronic device that changes the frequency of a radio or other electromagnetic signal.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.