1noun
ratio of the adjacent side to the hypotenuse of a right-angled triangle
01 Word definition
cos
3 letters · 1 vowel · 2 consonants
Is COS a word?
Yes. COS is a 3-letter noun. ratio of the adjacent side to the hypotenuse of a right-angled triangle Check the official dictionary for your particular word game before playing it.
Correct spelling
C-O-SHow do you spell COS?
COS contains 3 letters, begins with C, and ends with S.
Check another spelling →Meaning and definition
2noun
lettuce with long dark-green leaves in a loosely packed elongated head
Synonyms
Source: Open English WordNet 2025 (CC BY 4.0) ↗cosinecos lettuceromaineromaine lettuce
02 Letter breakdown
How is COS spelled?
C1O2S3
03 Word-game status
Can you play COS?
UnscramblerHQ dictionary
This spelling is present in our broad English solver dictionary.
Scrabble
Base tile value: 5 points. Confirm eligibility in the official word list used for your region and edition.
Words With Friends
Base tile value: 6 points. Confirm eligibility inside the current game dictionary.
04 Exact anagrams
The same letters, rearranged.
FAQ Quick answers
About COS.
How do you spell COS?
COS is spelled C-O-S. It contains 3 letters.