ˌse-mē,
-ˌmī,
-mi
1
a
: precisely half of:
(1)
: forming a bisection of
semidiameter
(2)
: being a usually vertically bisected form of (a specified architectural feature)
semidome
b
: half in quantity or value : half of or occurring halfway through a specified period of time
semiannual
semimonthly
compare bi-
2
3
a
: partial : incomplete
semiconsciousness
semidarkness
b
: having some of the characteristics of
semiporcelain
c
: quasi-
semigovernmental
semimonastic
Examples of semi in a Sentence
Recent Examples on the Web
Sophia Compton, FOXNews.com, 12 Oct. 2025
McConkey, who’s been in a sophomore semi-slump, came alive with big catches, including a short one that gave his side the lead in the third, and the biggest of the year, a 42-yarder to put his team in position for the winning field goal.
—Nick Canepa, San Diego Union-Tribune, 12 Oct. 2025
The Fort Worth Fire Department confirmed that multiple semi-trucks were on fire.
—Shambhavi Rimal, Fort Worth Star-Telegram, 12 Oct. 2025
Africa did finally get its first semi-finalists in 2022, when Morocco surprised everyone to reach the final four.
—Michael Cox, New York Times, 11 Oct. 2025
See All Example Sentences for semi
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Noun
Multiple semi-trucks caught fire following the impact, and two victims were found dead at the scene, FOX 4 News Dallas-Fort Worth reported, citing the Fort Worth Fire Department.
—Sophia Compton, FOXNews.com, 12 Oct. 2025
McConkey, who’s been in a sophomore semi-slump, came alive with big catches, including a short one that gave his side the lead in the third, and the biggest of the year, a 42-yarder to put his team in position for the winning field goal.
—Nick Canepa, San Diego Union-Tribune, 12 Oct. 2025
The Fort Worth Fire Department confirmed that multiple semi-trucks were on fire.
—Shambhavi Rimal, Fort Worth Star-Telegram, 12 Oct. 2025
Africa did finally get its first semi-finalists in 2022, when Morocco surprised everyone to reach the final four.
—Michael Cox, New York Times, 11 Oct. 2025
See All Example Sentences for semi
Cite this Entry
“Semi.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/semi. Accessed 15 Oct. 2025.
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