Find Synonyms

sinus Synonyms

Another word for sinus

Choosing another word for sinus depends on context, so the synonyms and similar words below are separated across 3 exact definitions and ranked by match strength.
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• noun (Context 1)

A hollow cavity within a bone or tissue, especially one of the air-filled cavities in the cranial bones that connect with the nasal passages.

Usage Example

"The cold weather and high pollen count caused her sinuses to become congested and painful."

Strong
antrum
cavity

• noun (Context 2)

An abnormal, narrow tract or fistula in tissue that allows pus or fluid to drain from a deep infection to an epithelial surface.

Usage Example

"A chronic draining fistula formed near the site of the infected surgical wound."

Strong
fistula

• noun (Context 3)

A rounded recess, indentation, or notch between two lobes of a plant leaf or petal.

Usage Example

"You can identify this species of oak by the deep, rounded recess between the lobes of its leaves."

Strong
recess
Weak
indentation

• Nearby Words

sinningia
sino tibetan pit viper
sinuously
sinus
sinusitis
sion
sip

Cite this Entry

Wordmom. (2026). Synonyms for Sinus. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/sinus
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