as in lightness
the state or quality of having little weight
the relative weightlessness of the suitcase surprised me
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Recent Examples of weightlessness
Their first weekend was spent unpacking and getting used to living in weightlessness, even though Meir and Fedyaev have both been to the ISS once previously.
—
Eric Lagatta, USA Today, 24 Feb. 2026
Leanne Fan, 18, a 12th-grader at Westview High School, built a device that uses rotation to simulate microgravity — the near-weightlessness that astronauts experience in space — in order to study how live organisms grow in space.
—Jemma Stephenson, San Diego Union-Tribune, 23 Feb. 2026
Heart muscles atrophy, or weaken from disuse, in adults who spend prolonged times in the weightlessness of space.
—Literary Hub, 20 Feb. 2026
Passengers get to experience a few minutes of weightlessness and see Earth against the blackness of space during New Shepard flights, each of which lasts 10 to 12 minutes.
—Mike Wall, Space.com, 30 Jan. 2026
This marks a major shift from space exploration to space manufacturing, leveraging weightlessness to create high-tech materials far superior to those made on Earth.
—Mrigakshi Dixit, Interesting Engineering, 31 Dec. 2025
When Koenigsmann approached her last year about the possibility of flying on Blue Origin and experiencing more than three minutes of weightlessness on a space hop, Benthaus thought there might be a misunderstanding.
—Marcia Dunn, Fortune, 21 Dec. 2025
Making space accessible New Shepard is designed to offer passengers a few minutes of weightlessness at the top of the flight path, as gravity begins to drag the capsule back to Earth.
—Jackie Wattles, CNN Money, 20 Dec. 2025
Eric Lagatta, USA Today, 24 Feb. 2026
Leanne Fan, 18, a 12th-grader at Westview High School, built a device that uses rotation to simulate microgravity — the near-weightlessness that astronauts experience in space — in order to study how live organisms grow in space.
—Jemma Stephenson, San Diego Union-Tribune, 23 Feb. 2026
Heart muscles atrophy, or weaken from disuse, in adults who spend prolonged times in the weightlessness of space.
—Literary Hub, 20 Feb. 2026
Passengers get to experience a few minutes of weightlessness and see Earth against the blackness of space during New Shepard flights, each of which lasts 10 to 12 minutes.
—Mike Wall, Space.com, 30 Jan. 2026
This marks a major shift from space exploration to space manufacturing, leveraging weightlessness to create high-tech materials far superior to those made on Earth.
—Mrigakshi Dixit, Interesting Engineering, 31 Dec. 2025
When Koenigsmann approached her last year about the possibility of flying on Blue Origin and experiencing more than three minutes of weightlessness on a space hop, Benthaus thought there might be a misunderstanding.
—Marcia Dunn, Fortune, 21 Dec. 2025
Making space accessible New Shepard is designed to offer passengers a few minutes of weightlessness at the top of the flight path, as gravity begins to drag the capsule back to Earth.
—Jackie Wattles, CNN Money, 20 Dec. 2025
Recent Examples of Synonyms for weightlessness
lightness
Noun
-
Levito, a former US national champion in 2023 and silver medalist at the World Championships in 2024, brings a signature lightness and grace to the ice.—
Alice Rosati,
Vanity Fair,
20 Feb. 2026
-
With the Stargazer Duo tent, IO started to move away from pure lightness and sleekness as its primary selling points, offering a tent that truly opened things up.—
New Atlas,
New Atlas,
20 Feb. 2026
Cite this Entry
“Weightlessness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/weightlessness. Accessed 26 Feb. 2026.
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