WordNet (r) 3.0 (2006):

prom
    n 1: a formal ball held for a school class toward the end of the
         academic year [syn: promenade, prom]

Moby Thesaurus II by Grady Ward, 1.0:

85 Moby Thesaurus words for "prom":
   Philharmonic concert, assemblee, assembly, assignation, at home,
   bal, bal costume, bal masque, ball, band concert, barn dance,
   brawl, caucus, chamber concert, colloquium, commission, committee,
   concert, conclave, concourse, congregation, congress, conventicle,
   convention, convocation, council, country dance, dance, date, diet,
   eisteddfod, fancy-dress ball, festivity, fete, forgathering, forum,
   gathering, get-together, hop, housewarming, levee, mask,
   masked ball, masque, masquerade, masquerade ball, meet, meeting,
   mixer, musical performance, musical program, panel, party,
   performance, philharmonic, plenum, pop concert, pops,
   popular concert, program, program of music, promenade,
   promenade concert, quorum, rally, reception, recital, record hop,
   rendezvous, seance, service of music, session, shindig, shindy,
   sit-in, sitting, soiree, square dance, stag dance,
   symphony concert, symposium, synod, tea dance, the dansant,
   turnout



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

PROM
       Partial Read Only Memory (ROM), "P-ROM"


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

PROM
       Programmable Read Only Memory (ROM, IC)


The Free On-line Dictionary of Computing (30 December 2018):

Programmable Read-Only Memory
PROM

    (PROM) A kind of ROM which can be written using a
   PROM programmer.  The contents of each bit is determined by a
   fuse or antifuse.  The memory can be programmed once after
   manufacturing by "blowing" the fuses, which is an irreversible
   process.  Blowing a fuse opens a connection while blowing an
   antifuse closes a connection (hence the name).  Programming is
   done by applying high-voltage pulses which are not encountered
   during normal operation.

   (1995-04-22)