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twin–size

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twin–size /ˈtwɪnˈsaɪz/ adjective
twin–size
/ˈtwɪnˈsaɪz/
adjective
Britannica Dictionary definition of TWIN–SIZE
US, of a bed
: having a size of 39 inches by 75 inches (about 1.0 by 1.9 meters) compare full-size, king-size, queen-size