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
Laia Cervelló Herrero, New York Times, 27 May 2026
Colorado State Patrol The driver of the second semi, a 48-year-old male, was transported to the hospital for minor injuries.
—Jennifer McRae, CBS News, 27 May 2026
Her short Boys & Girls was nominated at Cannes; Castle in the Dark reached the semi-finals at Rhode Island IIFF.
—Zac Ntim, Deadline, 27 May 2026
Beekeepers now crisscross the country in semi-trucks to pollinate our crops, towing thousands of bee colonies from one blooming pasture to the next like cattle ranchers on wheels.
—Literary Hub, 27 May 2026
See All Example Sentences for semi
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Noun
When Barcelona beat Bayern Munich in this year’s semi-finals earlier this month, Putellas was in tears following the second leg at the Camp Nou.
—Laia Cervelló Herrero, New York Times, 27 May 2026
Colorado State Patrol The driver of the second semi, a 48-year-old male, was transported to the hospital for minor injuries.
—Jennifer McRae, CBS News, 27 May 2026
Her short Boys & Girls was nominated at Cannes; Castle in the Dark reached the semi-finals at Rhode Island IIFF.
—Zac Ntim, Deadline, 27 May 2026
Beekeepers now crisscross the country in semi-trucks to pollinate our crops, towing thousands of bee colonies from one blooming pasture to the next like cattle ranchers on wheels.
—Literary Hub, 27 May 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 29 May. 2026.
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