ultraportable en · ADJ
Etymology
From ultra- + portable.
Meanings
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(not-comparable) Extremely portable
There are more subtle touches, too, like the wider spacing of the keys on a new Sony ultraportable computer notebook that goes on sale next week.
2007 June 7, Michel Marriott, “To Appeal to Women, Too, Gadgets Go Beyond ‘Cute’ and ‘Pink’”, in New York Times: