The Logical Language Group Online Dictionary Query

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To improve the quality of results, jbovlaste search does not return words with insufficient votes. To qualify to be returned in search results, a proposed lujvo is required to have received a vote in favor in both directions: for instance, in English to Lojban and in Lojban to English.

In addition, due to it being a very technically hard problem, full text searching (that is, searching of definitions rather than just keywords) is not available at this time.

1 definition found
From Lojban to English :

        Word: zdeltadirake [jbovlaste]
        Type: fu'ivla
  Gloss Word: Dirac delta in the sense of "generalized function"
  Gloss Word: sufficient infinity in the sense of "Dirac delta"
  Definition: x1 is the Dirac delta function (generalized), defined on
       structure x2 (contextless default is probably the field of real
       numbers), yielded by family of distributions x3 (contextless
       default is probably Gaussians centered at  0 and which enclose
       unit area)
       Notes: This generalized function evaluates to zero (0) everywhere
       except at 0 (in the domain), at which it evaluates to an
       infinity (∞) sufficient(ly large) for the purpose of
       integration to exactly equal one (1) whenever the integral
       interval properly contains 0 (in the domain). x2 determines
       what 0, 1, and ∞ mean. Properly, more than a set should be
       specified; the domain and codomain are determined thereby.

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