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

Since then, Wilson has had four revision surgeries and another procedure to place two new tissue expanders in her forehead. —Meredith Wilshere, PEOPLE, 11 Oct. 2025

Researchers inspecting the turbo expander developed for a large-scale, long-duration Liquid Air Energy Storage system. —Neetika Walter, Interesting Engineering, 12 Sep. 2025

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

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