kc(n = noun.time) khz, kilocycle, kilocycle per second, kilohertz - one thousand periods per second;
is a kind of rate
is a part of mc, megacycle, megacycle per second, megahertz, mhz
has parts: cps, cycle, cycle per second, cycles/second, hertz, hz

kc, abbr.
1 King's College.
2 King's Counsel.

kc, abbr. kilocycle(s).