cos.

¹

abbreviation

1. companies.

2. consul.

3. consulship.

4. counties.

cos

²

abbreviation

1. Trigonometry, Mathematics.,  cosine.

C.O.S.

³

Or c.o.s.

abbreviation

1. cash on shipment.

cos

⁴

[kos, kaws]

noun

1. romaine.

COS

¹

abbreviation

1. Chief of Staff

cos

²

/ kɒs /

noun

1. Usual US and Canadian name: romaine. a variety of lettuce with a long slender head and crisp leaves Compare cabbage lettuce

cos

³

/ kɒz /

abbreviation

1. cosine

Cos

⁴

/ kɒs /

noun

1. a variant spelling of Kos

cos

1. Abbreviation of cosine

Word History and Origins

Origin of cos.¹

1690–1700; after Kos, where it originated

Word History and Origins

Origin of cos.¹

C17: named after Kos, the Aegean island of its origin