ESM

2 definitions found

From WordNet (r) 2.0 [wn]:

  ESM
       n : electronic warfare undertaken under direct control of an
           operational commander to locate sources of radiated
           electromagnetic energy for the purpose of immediate
           threat recognition [syn: {electronic warfare-support
           measures}]



From Virtual Entity of Relevant Acronyms (Version 1.9, June 2002) [vera]:

  ESM
       External Storage Module (Sun)