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
Todd Boss, Forbes, 25 Feb. 2025
Nikola manufactured both hydrogen-electric and battery-electric semi trucks, and its fueling network has dispensed more than 330 metric tons of hydrogen, said Chief Executive Steve Girsky.
—Caroline Petrow-Cohen, Los Angeles Times, 19 Feb. 2025
The semi and Toyota collided, redirecting the Toyota into the center lane of I-70 where a Honda Accord struck it, according to court documents.
—Robert A. Cronkleton, Kansas City Star, 29 Jan. 2025
The sedan hit the rear of the northbound semi, which was turning left onto 32nd Avenue, and the sedan driver was pronounced dead at the scene, Aurora police said.
—Katie Langford, The Denver Post, 30 Jan. 2025
See All Example Sentences for semi
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Noun
This semi represented her 200th career singles pro win on tour.
—Todd Boss, Forbes, 25 Feb. 2025
Nikola manufactured both hydrogen-electric and battery-electric semi trucks, and its fueling network has dispensed more than 330 metric tons of hydrogen, said Chief Executive Steve Girsky.
—Caroline Petrow-Cohen, Los Angeles Times, 19 Feb. 2025
The semi and Toyota collided, redirecting the Toyota into the center lane of I-70 where a Honda Accord struck it, according to court documents.
—Robert A. Cronkleton, Kansas City Star, 29 Jan. 2025
The sedan hit the rear of the northbound semi, which was turning left onto 32nd Avenue, and the sedan driver was pronounced dead at the scene, Aurora police said.
—Katie Langford, The Denver Post, 30 Jan. 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 3 Mar. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share