ˌse-mē,
-ˌmī,
-mi
1
a
: precisely half of:
(1)
: forming a bisection of
semicircle
(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-
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
Ryan Murphy, IndyStar, 28 Jan. 2026
The multi-vehicle crash in Grand Rapids included several semi-trucks and multiple other vehicles.
—Jalen Williams, Freep.com, 27 Jan. 2026
As for the food quality, their current chef, Bolivar Hilario was recently named as a semi-finalist for a prestigious James Beard Award for best chef northeast.
—Pamela McLoughlin, Hartford Courant, 23 Jan. 2026
One man told a dispatcher that a semi was on top of his car.
—Nichole Manna, Fort Worth Star-Telegram, 23 Jan. 2026
See All Example Sentences for semi
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Noun
The driver of the minivan, another 17-year-old, was taken to a hospital with a minor head injury, and the semi-driver was not injured.
—Ryan Murphy, IndyStar, 28 Jan. 2026
The multi-vehicle crash in Grand Rapids included several semi-trucks and multiple other vehicles.
—Jalen Williams, Freep.com, 27 Jan. 2026
As for the food quality, their current chef, Bolivar Hilario was recently named as a semi-finalist for a prestigious James Beard Award for best chef northeast.
—Pamela McLoughlin, Hartford Courant, 23 Jan. 2026
One man told a dispatcher that a semi was on top of his car.
—Nichole Manna, Fort Worth Star-Telegram, 23 Jan. 2026
See All Example Sentences for semi
Cite this Entry
“Semi.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/semi. Accessed 31 Jan. 2026.
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