from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Computer Science Memory hardware that can be programmed only once.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • programmable read-only memory: A PROM chip can be programmed one or more times (depending on the type) and generally cannot be re-programmed without special equipment. Once programmed and installed in a device, it functions as a read-only chip (as if it had been hard-wired to function that way.)

from The Century Dictionary and Cyclopedia

  • n. A colloquial shortening of promenade.
  • n. An abbreviation of promontory.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a formal ball held for a school class toward the end of the academic year


p(rogrammable) r(ead-)o(nly) m(emory).
(American Heritage® Dictionary of the English Language, Fourth Edition)



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