C4

Cytopathology
A category of cytology interpretation which corresponds to “suspicious of malignancy”, based on the NHSBSP (UK) guidelines for cytology reporting of aspiration cytology of breast lesions.
Military
A plastic explosive which is one-third more powerful by weight than TNT. When C4 is detonated, the explosive is converted into gas which creates a pressure (shock) wave that demolishes the target by cutting, breaching or cratering.

complement deficiency

A state in which any of the complement proteins is subnormal Complement deficiencies–associated disorders C1 C1r SLE, renal disease, repeated infections C1s SLE C2 SLE, vasculitis, membranoproliferative glomerulonephritis, dermatomyositis C3 Repeated infections C4 SLE C5 SLE, gonococcal disease C6 Relapsing meningococcal meningitis, gonococcal infection C7 Raynaud's disease, chronic renal disease, gonococcal infection C8 SLE, gonococcal infection

Acronym	Definition
C4➣Command, Control, Communications, and Computers (US DoD)
C4➣Composition 4 (explosive)
C4➣Channel 4 (UK Terrestrial Television)
C4➣Carrera 4 (Porsche 911 model)
C4➣Butane
C4➣Middle C (piano keyboard)
C4➣Combat Casualty Care Course
C4➣Schedule IV Controlled Substance (USA)
C4➣Chaos Computer Club Cologne (German computer club in Cologne member of the CCC family)
C4➣Center for Clouds, Chemistry and Climate
C4➣Fourth-Generation Corvette (Chevrolet)
C4➣Trident I Missile
C4➣Controlled Collapse Chip Connect
C4➣Controlled Collapsed Chip Connection
C4➣Call Centre Consulting Connection (Canada)
C4➣Central CONUS Control Center (GPS)
C4➣Care, Competence, Control and Communications (Teksystems project management methodology)