portable adj. Carried or moved with ease: a portable typewriter; a portable generator. Capable of being transferred from one employer to another
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Portable software for USB drives, includes Firefox, Thunderbird, OpenOffice, media players, file archiver, and antivirus programs.
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Portable classroom, a temporary building installed on the grounds of a school to provide additional classroom space where there is a shortage of capacity ...
en.wikipedia.org/wiki/Portable