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
Laia Cervelló Herrero, New York Times, 26 Oct. 2025
The doors would then close with guests standing in a semi-circle as the president moved around the group, greeting each person.
—Ashley J. Dimella, FOXNews.com, 25 Oct. 2025
Authorities said Singh was driving a Freightliner semi-truck and failed to stop in time when traffic in his lane had slowed or stopped Tuesday afternoon.
—Meredith Deliso, ABC News, 23 Oct. 2025
Lastly, Cinema Eye also announced the ten films on this year’s Shorts List, the organization’s annual list of semi-finalists for its Nonfiction Short Film Honor.
—Kate Erbland, IndieWire, 23 Oct. 2025
See All Example Sentences for semi
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Noun
There’s certainly no other word to describe Yamal’s individual showing in the Champions League semi-finals against Inter.
—Laia Cervelló Herrero, New York Times, 26 Oct. 2025
The doors would then close with guests standing in a semi-circle as the president moved around the group, greeting each person.
—Ashley J. Dimella, FOXNews.com, 25 Oct. 2025
Authorities said Singh was driving a Freightliner semi-truck and failed to stop in time when traffic in his lane had slowed or stopped Tuesday afternoon.
—Meredith Deliso, ABC News, 23 Oct. 2025
Lastly, Cinema Eye also announced the ten films on this year’s Shorts List, the organization’s annual list of semi-finalists for its Nonfiction Short Film Honor.
—Kate Erbland, IndieWire, 23 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 28 Oct. 2025.
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