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
Rafael Nam, NPR, 1 Apr. 2026
The semi’s driver turned on the hazard lights and tried to block the disabled vehicle.
—Harriet Ramos, Fort Worth Star-Telegram, 31 Mar. 2026
These faux linen drapes from NiceTown build on the versatility of semi-sheers with 16 color choices and both rod pocket and back tab installation options.
—Nashia Baker, Architectural Digest, 31 Mar. 2026
Both teams successfully came through their respective playoff semi-finals over the weekend to make this week’s decider in Zenica.
—Ben Verbrugge, MSNBC Newsweek, 31 Mar. 2026
See All Example Sentences for semi
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Noun
For example, the two semi-finals of the tournament also saw hefty price hikes.
—Rafael Nam, NPR, 1 Apr. 2026
The semi’s driver turned on the hazard lights and tried to block the disabled vehicle.
—Harriet Ramos, Fort Worth Star-Telegram, 31 Mar. 2026
These faux linen drapes from NiceTown build on the versatility of semi-sheers with 16 color choices and both rod pocket and back tab installation options.
—Nashia Baker, Architectural Digest, 31 Mar. 2026
Both teams successfully came through their respective playoff semi-finals over the weekend to make this week’s decider in Zenica.
—Ben Verbrugge, MSNBC Newsweek, 31 Mar. 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 5 Apr. 2026.
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