adjective Etymology: poly- + -chotomous (as in dichotomous) Date: circa 1858 dividing or marked by division into many parts, branches, or classes • polychotomy noun

New Collegiate Dictionary. 2001.

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  • polychotomous — poly·chot·omous …   English syllables

  • polychotomous — …   Useful english dictionary

  • polychotomous key — noun biology : a taxonomic key based on a choice between several alternative characters …   Useful english dictionary

  • poly- — combining form Etymology: Greek, from polys; akin to Old High German filu many, Sanskrit puru, Latin plenus full more at full 1. many ; several ; much ; multi < polychotomous > < polygyny > 2 …   New Collegiate Dictionary

  • polychotomy — noun see polychotomous …   New Collegiate Dictionary

  • Single-access key — A key in Biology is a modeling method used for categorizing species using logical choices. A single access key (Dichotomous key also called sequential key , analytical key [1], or pathway key ) is a key where the sequence and structure of… …   Wikipedia

  • polychotomy — [päl΄i kät′ə mē] n. pl. polychotomies 〚 POLY + chotomy, infl. by DICHOTOMY〛 division or separation into many parts, classes, etc. polychotomous [päl΄i kät′əməs] adj. * * * …   Universalium

  • Class membership probabilities — In general proplems of classification, class membership probabilities reflect the uncertainty with which a given indivual item can be assigned to any given class. Although statistical classification methods by definition generate such… …   Wikipedia

  • Dummy variable (statistics) — In statistics and econometrics, particularly in regression analysis, a dummy variable (also known as an indicator variable) is one that takes the values 0 or 1 to indicate the absence or presence of some categorical effect that may be expected to …   Wikipedia

  • polychotomy —   n. division into many parts.    ♦ polychotomous, a …   Dictionary of difficult words

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