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{%type%} Definitions

WordNet 3.0Copyright Princeton University
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Short "hint"

A gas that has no color or smell, burns very easily and is the lightest of all known substances.

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Usage examples (19)
  • Some scientists claim that hydrogen, because it is so plentiful, is the basic building block of the universe.
  • The atoms of what we call hydrogen or oxygen may well turn out to be worlds, as the stars are which make atoms for astronomy.
  • I believe it was linzloo08 who said that, in referencing the fact that the sun will stop shining when the hydrogen is all gone.
  • The radio waves split the hydrogen from the oxygen.
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The Open Dictionary of English is a collaborative project, based on Open Source materials, LearnThat resources, and partner APIs.
We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google, Wordnik.com, Dictionary.com, Stands4.com and YouTube, OEDILF.com, Kylescholz.com, Best-Practice.com, Forvo.com, as well as the generous Creative Commons community.