What is the meaning of frontal sinus?

noun

  • One of a pair of cavities in the frontal bone. .
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). frontal sinus. Retrieved September 21, 2026, from http://smartdefine.org/frontal_sinus/definitions/1212122
ChicagoWordNet. 2010. "frontal sinus" http://smartdefine.org/frontal_sinus/definitions/1212122 (accessed September 21, 2026).
HarvardWordNet 2010, frontal sinus, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/frontal_sinus/definitions/1212122>.
MLAWordNet. "frontal sinus" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/frontal_sinus/definitions/1212122>