COB Full Form – COB means Close Of Business. Also known as the end of business and the end of the day. It indicates the point in time a business is being closed for the day.

Category – Email

C = Close

O = Of

B = Business

Category – Healthcare

C = Coordination

O = Of

B = Benefits

Category – Telecommunication

C = Change

O = Of

B = Billing

Category – Electronics

C = Chip

O = On

B = Board

Category – Space Science

C = Communications

O = Office

B = Building