# or+characteristic

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**characteristic detection probability**— In naval mine warfare, the ratio of the number of mines detected on a single run to the number of mines which could have been detected within the characteristic detection width …82

**characteristic equation**— noun Date: circa 1925 an equation in which the characteristic polynomial of a matrix is set equal to 0 …83

**characteristic equation**— 1. Math. a. the characteristic polynomial of a given matrix, equated to zero. b. Also called auxiliary equation. an equation with one variable and equated to zero, which is derived from a given linear differential equation and in which the… …84

**characteristic function**— Math. 1. a function defined on a given set, having value 1 for every element of the set and value 0 for every element not contained in the set. 2. See characteristic polynomial. [1875 80] * * * …85

**characteristic polynomial**— noun The determinant, of a matrix minus an indeterminant times the identity matrix The characteristic polynomial of is …86

**characteristic function**— noun A function which is equal to 1 for all points in its domain which belong to a given set, and is equal to 0 for all points in the domain which do not belong to that given set. The characteristic function of a set A is often represented as… …87

**characteristic**— 1. SYN: character. 2. Typical or distinctive of a particular disorder. receiver operating c. (ROC) a plot of the sensitivity of a diagnostic test as a function of nonspecificity (one minus the specificity). The ROC curve indicates the …88

**Characteristic length**— A characteristic length is an important dimension that defines the scale of a physical system. Often such a length is used as an input to a formula in order to predict some characteristics of the system. Examples: Reynolds number Biot number… …89

**characteristic rays**— x rays emitted as a result of the rearrangement of electrons in the inner shells of atoms, as when electrons are ejected from the inner shells by high speed bombarding electrons or when an orbital electron is captured by the nucleus during… …90

**characteristic**— 1. noun interesting characteristics Syn: attribute, feature, quality, essential quality, property, trait, aspect, element, facet; mannerism, habit, custom, idiosyncrasy, peculiarity, quirk, oddity, foible 2. adjective …