expander

noun

ex·​pand·​er ik-ˈspan-dər 

: one that expands

specifically : any of several colloidal substances (such as dextran) of high molecular weight used as a blood or plasma substitute for increasing the blood volume

Examples of expander in a Sentence

Recent Examples on the Web

This capability is particularly useful for patients with magnetic spinal rods or breast tissue expanders, as adjustments can be made throughout the recovery process, ensuring the best possible outcome. —Jennifer Esposito, Forbes.com, 16 June 2025

And how common are the particularly good expander graphs for which this tension is highest? —Leila Sloman, Quanta Magazine, 18 Apr. 2025

The sturdy spinner has an expander, compression straps, a divider with a pocket, and an adjustable multi-height handle. —Hillary Maglin, Travel + Leisure, 30 Nov. 2024

The expandable suitcase, which is 34 percent off on Amazon, has enough room to pack for a four-day trip, including two pairs of shoes, multiple jackets, and two toiletry bags, without using the expander. —Becca Blond, Travel + Leisure, 25 Nov. 2024

Word History

First Known Use

1862, in the meaning defined above

Rhymes for expander

• bystander
• commander
• highlander
• leander
• meander
• philander
• brander
• candor
• dander
• gander
• grander
• hander

Medical Definition

expander

noun

ex·​pand·​er ik-ˈspan-dər 

: any of several colloidal substances (as dextran) of high molecular weight used as a blood or plasma substitute for increasing the blood volume

called also extender