Yes, cos is in the scrabble dictionary

...and is worth 6 points by itself.

find more words you can make below

Cos Definition

noun

See romaine.
from The American Heritage Dictionary of the English Language, 4th Edition

abbreviation

Cosine.
from The American Heritage Dictionary of the English Language, 4th Edition
Companies.
from Free Scrabble Dictionary
Consul; consulship.
from Free Scrabble Dictionary
Cosine.
from Free Scrabble Dictionary
Counties.
from Free Scrabble Dictionary

Find More Words!

Wildcard(?) letters appear in RED

Here are some other words you could make with the letters COS, you can also
use this lookup tool to help you find words with our scrabble word finder.

Top Words by points

Points

cos

5

2 letter words with COS

Points

os

2

so

2

3 letter words with COS

Points

cos

5

soc

5

Found 4 words in 0.1251 seconds