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subnotebook

[suhb-noht-boo k]
noun
  1. a laptop computer smaller and lighter than a notebook, typically weighing less than 5 pounds (2.3 kg).
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Origin of subnotebook

An Americanism dating back to 1990–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018