Word formed from the initial letter or letters of each of the successive or major parts of a composite term. Examples: Soweto (South West Townships); Radar; UNGEGN.
A word formed by combining the initial letters of a series of words: laser?light amplification by stimulated emission of radiation, NASA?National Aeronautics and Space Administration.
A set of letters that stand for a standard term (e.g. TLA - Three Letter Acronym or ETLA - Extended Three Letter Acronym)