Grade 5

sinus

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(si-nus) 2 syllables

Definition

noun. 1 an opening or cavity; 2 any of various airfilled cavities especially in the bones of the skull

Example Sentence

I have a sinus infection.

Synonyms

cavity; opening; channel; pocket; recess

Antonyms

closing; blockage

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sinus
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Rhymes

  • dryness
  • highness
  • linus
  • minus
  • shyness
  • sinus
  • slyness
  • wryness

  • aquinas