sinus
|si-nus|
B2
/ˈsaɪ.nəs/
cavity or channel
Etymology
Etymology Information
'sinus' originates from Latin, specifically the word 'sinus', where it meant 'a curve, fold, or hollow'.
Historical Evolution
'sinus' was directly borrowed from Latin into English, maintaining its original form and meaning.
Meaning Changes
Initially, it meant 'a curve or fold', but over time it evolved into its current meaning of 'a cavity or channel in the body'.
Meanings by Part of Speech
Noun 1
a cavity within a bone or other tissue, especially one in the bones of the face or skull connecting with the nasal cavities.
The infection spread to her sinuses, causing severe headaches.
Synonyms
Last updated: 2025/06/09 11:33