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{%type%} Definitions

WordNet 3.0Copyright Princeton University
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Short "hint"

A mass of tiny drops of water floating in the air. Also: The gas formed when a substance that is usually liquid or solid is heated.

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Usage examples (35)
  • It is always sunrise somewhere; the dew is never all dried at once; a shower is forever falling; vapor is ever rising.
  • And water vapor is in equilibrium with the oceans.
  • Also, water vapor is in equilibrium with the oceans.
  • Water vapor is the most powerful/ubiquitous greenhouse gas
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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.