Definitions
a wide channel containing blood; does not have the coating of an ordinary blood vessel
Word origin
Learned borrowing from Latin sinus (“a bent surface, curve, hollow”). Doublet of sine.
Used in a sentence
“The variations are described in terms of cycles of sinuses and cosinuses.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Air-filled cavity”5 letters
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