from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Not periodic; lacking a regular cycle; irregular

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

  • adj. not recurring at regular intervals


from Wiktionary, Creative Commons Attribution/Share-Alike License

non- +‎ periodic


  • In the 1880s, while studying the three-body problem, he found that there can be orbits which are nonperiodic, and yet not forever increasing nor approaching a fixed point.

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  • By activating the Analysis ToolPak add-in, you add over 30 specialized finan - cial functions that run the gamut from those that calculate the accrued interest for a security paying interest periodically and only at maturity, all the way to those that calculate the internal rate of return and the net pres - ent value for a schedule of nonperiodic cash flows.

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  • Using a nonperiodic key alphabets, ATTACK AT TWO TODAY, becomes, with spaces suppressed:

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