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Definition of expander

expander

/ɪkˈspændɚ/
ex · pand · er
Plural:expanders
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expander Lexical Profile

expander Game Scores & Validity

• noun

1

A mechanical tool, orthodontic appliance, or fitness device used to widen, stretch, or enlarge an opening, structure, or muscle group.

Example

"The orthodontist fitted a palatal expander to gradually widen the patient's upper jaw."

2

An electronic audio processor that increases the dynamic range of a signal by attenuating sounds below a set threshold, functioning as the opposite of a compressor.

Example

"The sound engineer used an expander on the vocal track to reduce background room noise between phrases."

3

In mathematics and computer science, a sparse graph that exhibits strong connectivity properties despite having relatively few edges.

Example

"Researchers used an expander to construct an efficient error-correcting code for the network."

Antonyms
View all antonyms for expander

• Rhymes for expander

• Nearby Words

expand
expandability
expandable
expander
expanse
expansion
expansionary

Cite this Entry

Wordmom. (2026). Definition of Expander. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/expander
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