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Company Writer's Guide
[For Illustration Only] B-6
Symbols for Units in General Use (Cont’d)
Unit Symbol Notes
centipoise cP
1 cP = 1 mPa • s. The name is deprecated (see
ANSI Z210.1-1976).
centistokes cSt
1 cst = 1 mm
2
/s. The name centistokes is
deprecated (see ANSI Z210.1-1976).
circular mil cmil 1 cmil = (Π/4) • 10
-6
in
2
coulomb C SI unit of electric charge.
cubic centimeter cm
3
cubic foot ft
3
cubic foot per minute ft
3
/min
cubic foot per second ft
3
/s
cubic inch in
3
cubic meter m
3
cubic meter per second m
3
/s
cubic yard yd
3
curie Ci
A unit of activity of radionuclide. Use of the
SI unit, the becquerel, is preferred, 1 Ci = 3.7 x
10
10
Bq.
cycle c
cycle per second Hz, c/s
See hertz. The name hertz is internationally
accepted for this unit; the symbol Hz is preferred
to c/s.