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expander

[ ik-span-der ]

noun

  1. a person or thing that expands.
  2. Also expandor. Electronics. a transducer that produces an output with a range of voltages greater than that of the input signal. Compare compressor ( def 5 ).


expander

/ ɪkˈspændə /

noun

  1. a device for exercising and developing the muscles of the body

    a chest expander

  2. an electronic device for increasing the variations in signal amplitude in a transmission system according to a specified law Compare compressor compander
“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


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Word History and Origins

Origin of expander1

First recorded in 1860–65; expand + -er 1
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Example Sentences

Now it is five days post-mastectomy and insertion of the tissue expander that presses hard against my chest wall.

Tissue expander followed by an implant?

Virelles is a subtler expander.

She had life-saving surgery to remove a tumour from her breast last summer and has since lived with a tissue expander, a temporary fix until an operation to change it to a permanent implant.

From Reuters

There’s even a bunch of apps and trials preinstalled, including Photoshop 3, Premiere 4, Illustrator 5.5, StuffIt Expander, and Apple’s Web Page Construction Kit.

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expanded plasticexpanding universe