heavy oxygen

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noun

either of the two stable isotopes of oxygen having mass numbers of 17 and 18.

QUIZ

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Test how much you really know about regular and irregular plural nouns with this quiz.

Question 1 of 9

Which of the following nouns has an irregular plural form?

Words nearby heavy oxygen

The clichés about football-obsessed husbands and frustrated wives are pretty heavy-handed.
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“There is a heavy security presence but nothing has changed,” agrees Father Javier.
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The running machines are a gloomy chorus of heavy-footed stomping.
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“JSwipe is currently under heavy load,” flashed across the screen, one night as a friend and I looked at it.
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Up till then I was just a dog-assed heavy, one of the posse.
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The policemen looked dull and heavy, as if never again would any one be criminal, and as if they had come to know it.
Bella Donna|Robert Hichens
Drone: the largest tube of a bag-pipe, giving forth a dull heavy tone.
Gulliver's Travels|Jonathan Swift
Hunter-Weston despite his heavy losses will be advancing to-morrow which should divert pressure from you.
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Heavy firing continued all that afternoon, inflicting great loss on the rebels, whilst the Spaniards lost one soldier.
The Philippine Islands|John Foreman
The keen resentment had faded from his face, but an immense reproach was there—a heavy, helpless, appealing reproach.
Confidence|Henry James