cos

¹

[ kos, kaws ]

noun

1. romaine.

cos

²

abbreviation for

1. Trigonometry, Mathematics. cosine.

cos.

³

abbreviation for

1. companies.
2. consul.
3. consulship.
4. counties.

C.O.S.

⁴

or c.o.s.

abbreviation for

1. cash on shipment.

cos

¹

/ kɒz /

abbreviation for

1. cosine

COS

²

abbreviation for

1. Chief of Staff

cos

³

/ kɒs /

noun

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

Cos

⁴

/ kɒs /

noun

1. a variant spelling of Kos

cos

1. Abbreviation of cosine

Word History and Origins

Origin of cos¹

1690–1700; after Kos, where it originated

Word History and Origins

Origin of cos¹

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