Science

General Science, Popular Science, Hard Science, Physics, Astronomy, Geology, Chemistry, Ocean Science, Mathematics and Forensic.

C3S

C3S stands for Center for Computer and Communication Security C3S stands for Command Control Communications Segment C3S stands for Consultation, Command and Control Systems C3S stands for Command, Control & Communications System C3S stands for Command, Control, Communications & Surveillance C3S stands for Cysteine-3-to-Serine (biochemistry)

C40

C40 stands for Control for 40 Days (research test group)

C4FM

C4FM stands for Constant Envelope 4-Level Frequency Modulation

C4I

C4I stands for Command, Control, Communications, Computers, & Intelligence (US DoD) C4I stands for Community Climate Change Consortium for Ireland (est. 2003) C4I stands for Centre for Infections (Health Protection Agency; UK)

C4O

C4O stands for Cycling for Opportunity (University of Waterloo; Waterloo, Ontario, Canada)