1
: having the usual or normal size of its kind
a full-size keyboard
2
US, of a bed : having the dimensions 54 by 75 inches (about 1.4 by 1.9 meters)
also : of a size to fit a full-size bed
full-size sheets
compare king-size, queen-size, twin-size
3
US, of a vehicle : relatively large in size
especially, of a sedan : having four doors and seating for up to six
Not too long ago, everyone, and we mean everyone, from Elvis to your Aunt Bea drove a big, powerful full-size American car. … Scott Oldham

Examples of full-size in a Sentence

Recent Examples on the Web
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The kitchen is dreamy with its huge windows and Siberian elm countertops; same goes for the back patio with its trellis covering a full-size outdoor-dining table that feels straight out of Under the Tuscan Sun. Clio Chang, Curbed, 14 June 2026 Tesla also makes the Cybertruck, one of the few full-size electric pickup trucks available in America. Charles Singh, USA Today, 12 June 2026 Generation 3 for anyone who wants full-size prints rather than the Go's miniature ones. New Atlas, 10 June 2026 Along with table torches, full-size torches like these glass ones are a great way to upgrade your space while stopping pests in their tracks. Alicia Geigel, Southern Living, 9 June 2026 See All Example Sentences for full-size

Word History

First Known Use

1772, in the meaning defined at sense 1

Time Traveler
The first known use of full-size was in 1772

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Cite this Entry

“Full-size.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/full-size. Accessed 15 Jun. 2026.

Kids Definition

full-size

adjective
ˈfu̇l-ˌsīz
1
: having the usual or normal size of its kind
2
: having a size of 54 inches by 75 inches (about 1.4 meters by 1.9 meters)
a full-size bed
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