CC means Crowd Control. Not all forms of crowd control have to be about stunning a mob for 60 seconds. Any ability that helps with controlling the situation and hence incoming damage is a form of crowd control ability. A Vanguard/Powertech pulling a mob that's shooting at the healer to within the tank's AOE attacks. A Guardian/Juggernaut pushing a mob off to fall to his death. These are abilities that control the situation and reduce incoming damage.
There is more to CC than just stuns.
Really spliting hairs and reaching
What you describe are class abilities we all hope people know how to use successfully.
I been playing MMORPGs for 20+ years now and CC has ALWAYS been a term used exclusively on longer duration mez/stun/root type spells, not short duration.
Whens the last time you heard someone say
"Hey you go CC that Mob while I CC this mob"
and then you both go and knock Back said mobs
if you say more then zero time, I think your telling untrue stories
CC means long duration movement imparing abilities
Probably always will mean such.