1
: provided by an official U.S. military supply department
GI shoes
2
: of, relating to, or characteristic of U.S. military personnel
3
: conforming to military regulations or customs
a GI haircut
plural GIs or GI's
ˌjē-ˈīz 
: a member or former member of the U.S. armed forces
especially
: a man enlisted in the army
: in a strictly regulation manner
: to clean (something) thoroughly in preparation for or as if for a military inspection
The barracks … were in fine order—they'd been GI'd the night before.—
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Examples of gi in a Sentence
Verb
in preparation for one of her mother-in-law's dreaded visits, she had GI'd the whole house
Recent Examples on the Web
Michelle Pugle, Verywell Health, 4 Nov. 2024
Mostly hastened by the GI Bill, the percentage of Black students accepted at historically white colleges and universities only grew from less than 1% to 3% from 1943 to 1953.
—Lorena Chambers / Made By History, TIME, 26 Oct. 2024
Avoid or limit foods and beverages with a high glycemic index (GI), including white bread, rice, potatoes, sodas, and fruit juices.
—Lindsay Curtis, Health, 25 Oct. 2024
The condition was originally identified as the reason why some people who’d had GI surgery or a digestive disease developed malabsorption (or failed to soak up nutrients from food).
—Erica Sloan, SELF, 24 Oct. 2024
See all Example Sentences for gi 
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Noun
Bloating is when your gastrointestinal (GI) tract fills with air or gas.
—Michelle Pugle, Verywell Health, 4 Nov. 2024
Mostly hastened by the GI Bill, the percentage of Black students accepted at historically white colleges and universities only grew from less than 1% to 3% from 1943 to 1953.
—Lorena Chambers / Made By History, TIME, 26 Oct. 2024
Avoid or limit foods and beverages with a high glycemic index (GI), including white bread, rice, potatoes, sodas, and fruit juices.
—Lindsay Curtis, Health, 25 Oct. 2024
The condition was originally identified as the reason why some people who’d had GI surgery or a digestive disease developed malabsorption (or failed to soak up nutrients from food).
—Erica Sloan, SELF, 24 Oct. 2024
See all Example Sentences for gi
Dictionary Entries Near gi
Cite this Entry
“Gi.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/gi. Accessed 28 Nov. 2024.
Copy CitationKids Definition
GI
1 of 2 adjective
: of, relating to, or characteristic of U.S. military forces
GI
2 of 2 noun
plural GIs or GI's
: a member or former member of the U.S. armed forces
Etymology
Adjective
from the abbreviation for galvanized iron used in listing such articles as garbage cans, but mistaken as standing for government issue
Medical Definition
GI
abbreviation1
gastrointestinal
2
glycemic index
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