as in researcher
one who observes or studies by close examination and systematic inquiry
a psychology experimenter doing research into the sources of panic attacks
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Recent Examples of experimenter
The team hypothesizes that the bats anchored themselves to landmarks in their environment, such as the coastline, the experimenters’ tents, and their perches.
—
Yasemin Saplakoglu, Quanta Magazine, 21 Jan. 2026
Horses that smelled the fear samples touched the experimenter less than those in a control group or those that smelled joyful sweat samples.
—Marta Hill, Scientific American, 14 Jan. 2026
Bacharach and other pop greats were rescued later by experimenters like Elvis Costello and White Stripes.
—Michael Barnes, Austin American Statesman, 8 Jan. 2026
If the experimenter reads the information about which slit the photon passed through, there will never be an interference pattern.
—Paul Sutter, Space.com, 20 Dec. 2025
But finding lightning has proven more elusive on our closest planetary neighbors — even though experimenters in the 1970s did lab work that suggested lightning should exist on Mars.
—Nell Greenfieldboyce, NPR, 26 Nov. 2025
An experimenter screens individuals from a population for a trait of interest, and only those that meet a certain threshold are allowed to reproduce to create the next generation.
—Shraddha Lall, The Conversation, 16 Oct. 2025
The demonstrator performs an action thrice in response to the gestural command of the experimenter, 3–5 s following which the second experimenter gives the same gestural command to the test subject in a test trial.
—Grrlscientist, Forbes.com, 13 Sep. 2025
OceanGate co-founder and CEO Stockton Rush fancied himself an adventurer, visionary and MacGyver-esque experimenter.
—Allison Morrow, CNN Money, 10 Aug. 2025
Yasemin Saplakoglu, Quanta Magazine, 21 Jan. 2026
Horses that smelled the fear samples touched the experimenter less than those in a control group or those that smelled joyful sweat samples.
—Marta Hill, Scientific American, 14 Jan. 2026
Bacharach and other pop greats were rescued later by experimenters like Elvis Costello and White Stripes.
—Michael Barnes, Austin American Statesman, 8 Jan. 2026
If the experimenter reads the information about which slit the photon passed through, there will never be an interference pattern.
—Paul Sutter, Space.com, 20 Dec. 2025
But finding lightning has proven more elusive on our closest planetary neighbors — even though experimenters in the 1970s did lab work that suggested lightning should exist on Mars.
—Nell Greenfieldboyce, NPR, 26 Nov. 2025
An experimenter screens individuals from a population for a trait of interest, and only those that meet a certain threshold are allowed to reproduce to create the next generation.
—Shraddha Lall, The Conversation, 16 Oct. 2025
The demonstrator performs an action thrice in response to the gestural command of the experimenter, 3–5 s following which the second experimenter gives the same gestural command to the test subject in a test trial.
—Grrlscientist, Forbes.com, 13 Sep. 2025
OceanGate co-founder and CEO Stockton Rush fancied himself an adventurer, visionary and MacGyver-esque experimenter.
—Allison Morrow, CNN Money, 10 Aug. 2025
Recent Examples of Synonyms for experimenter
researcher
Noun
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That has raised some concerns among longtime prediction market experts and researchers.—
Suzy Khimm,
NBC news,
13 Feb. 2026
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Now, those vaccines, which researchers estimate have prevented thousands of deaths and millions of illnesses, are recommended by the CDC only for children at high risk of serious illness or after consultation between doctors and parents.—
Amanda Seitz,
NPR,
13 Feb. 2026
Cite this Entry
“Experimenter.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/experimenter. Accessed 14 Feb. 2026.
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