as in bottom
the side or part facing downward from something
the underside of the cat's coat is pure white
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Recent Examples of underside
That's where an experimental new spectral sensor comes in, as it's mounted directly on the underside of individual plants' leaves.
—
New Atlas, 27 Nov. 2024
Which in the mouse’s case also meant having to pause using it because this rodent's charging port is stashed on its underside.
—Rob Pegoraro, PCMAG, 28 Oct. 2024
The female Black Widow is identified by a distinctive red hourglass marking on the underside of its abdomen.
—Marley Malenfant, Austin American-Statesman, 19 Sep. 2024
Laser pulses generate a topographic map in a manner similar to how a bat uses echolocation: Laser light is fired from an aircraft, bounces off objects on the ground, and returns to the detector located on the underside of the aircraft.
—Anna Lagos, WIRED, 30 Oct. 2024
See all Example Sentences for underside 
New Atlas, 27 Nov. 2024
Which in the mouse’s case also meant having to pause using it because this rodent's charging port is stashed on its underside.
—Rob Pegoraro, PCMAG, 28 Oct. 2024
The female Black Widow is identified by a distinctive red hourglass marking on the underside of its abdomen.
—Marley Malenfant, Austin American-Statesman, 19 Sep. 2024
Laser pulses generate a topographic map in a manner similar to how a bat uses echolocation: Laser light is fired from an aircraft, bounces off objects on the ground, and returns to the detector located on the underside of the aircraft.
—Anna Lagos, WIRED, 30 Oct. 2024
See all Example Sentences for underside
Thesaurus Entries Near underside
Cite this Entry
“Underside.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/underside. Accessed 21 Dec. 2024.
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