An acronym is a kind of abbreviation. It is a word formed by taking letters from a phrase that is too long to use comfortably.

eg: Laser is an acronym of Light Amplification by Stimulated Emission of Radiation

If the letters do not make a word, but are pronounced individually, as in the CIA or the BBC, it can be called an initialism.

Acronyms and Initialisms`
Acronym Definition
A&CCG Ashurst and Colbury Community Group
AGM Annual General Meeting
APM Annual Parish Meeting
CAH Community Action Hampshire
CPRE Campaign to Protect Rural England
HALC Hampshire Association of Local Councils
HAPTC Hampshire Association of Parish and Town Councils
HCC Hampshire County Council
HWRC Household Waste Recycling Centres
NFDC New Forest District Council
NFNPA New Forest National Park Association
RAISE Regional Action and Involvement South East
SEERA South East England Regional Assembly