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

  • adv. At an equal pace; side by side: inflation and interest rates increasing pari passu.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. at an equal rate
  • adv. at an equal rate

from The Century Dictionary and Cyclopedia

  • n. With equal pace or progress; side by side; in complete accord; in law, equally in proportion; without preference; pro rata.

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

  • adv. used in legal language


Latin parī passū : parī, ablative of pār, equal + passū, ablative of passus, step.
(American Heritage® Dictionary of the English Language, Fourth Edition)


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  • "The senior preferred shares will qualify as Tier 1 capital and will rank senior to common stock and pari passu, which is at an equal level in the capital structure, with existing preferred shares, other than preferred shares which by their terms rank junior to any other existing preferred shares."

    - "Treasury Announces TARP Capital Purchase Program Description (press release), U.S Treasury Department, Oct. 14, 2008

    October 15, 2008

  • I learned this from a real estate broker in Manhattan- the brokerage's name is Pari Passu. I'm not sure how "equal step" translates to our stratified market in NYC, but there you have it.

    February 24, 2007