subnotebook

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sub·note·book

 (sŭb′nōt′bo͝ok′)
n.
A portable computer that is smaller than a notebook computer.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

sub•note•book

(ˈsʌbˌnoʊt bʊk)
n.
a laptop computer smaller and lighter than a notebook, typically weighing less than 5 pounds (2.3 kg).
[1990–95, Amer.]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Even though PCs still dominate the computer industry, the legendary Mac desktops and the latest MacBook Air ultralight laptops are popping up all over a[euro]" in homes, schools, business, and government, not to mention, iPod music players that transformed the digital music industry and Apple's groundbreaking iPhones and iPads.
Apple introduced an update to its MacBook Air line of ultralight laptops at its annual WorldWide Developers Conference, or WWDC.