What does "ultrabook" mean?

A very lightweight and thin portable computer the areal size of a notebook computer or subnotebook.

Ultrabook

Common synonyms include: category label, high end notebook, lightweight laptop, premium notebook, slim laptop.

noun

noun ·Rare ·Advanced level

Noun

1
A very lightweight and thin portable computer the areal size of a notebook computer or subnotebook.

From ultra- + book; see notebook computer.