The line containing the locus of points from which the segments respectively tangent to two given circles have equal length.

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• radical axis — noun 1. : a straight line that is the locus of points from which tangents drawn to two given circles are equal 2. : a straight line common to the three radical planes of three given spheres taken in pairs * * * Geom. the line such that tangents… …   Useful english dictionary

• Radical axis of two circles — Radical Rad i*cal (r[a^]d [i^]*kal), a. [F., fr. L. radicalis having roots, fr. radix, icis, a root. See {Radix}.] 1. Of or pertaining to the root; proceeding directly from the root. [1913 Webster] 2. Hence: Of or pertaining to the root or… …   The Collaborative International Dictionary of English

• Radical axis of two circles — Axis Ax is, n.; pl. {Axes}. [L. axis axis, axle. See {Axle}.] A straight line, real or imaginary, passing through a body, on which it revolves, or may be supposed to revolve; a line passing through a body or system around which the parts are… …   The Collaborative International Dictionary of English

• radical axis — Geom. the line such that tangents drawn from any point of the line to two given circles are equal in length. [1840 50] * * * …   Universalium

• radical axis — /rædɪkəl ˈæksəs/ (say radikuhl aksuhs) noun (of two circles) the line such that tangents drawn from any point of the line to the two circles are equal in length …

• Radical — Rad i*cal (r[a^]d [i^]*kal), a. [F., fr. L. radicalis having roots, fr. radix, icis, a root. See {Radix}.] 1. Of or pertaining to the root; proceeding directly from the root. [1913 Webster] 2. Hence: Of or pertaining to the root or origin;… …   The Collaborative International Dictionary of English

• Radical pitch — Radical Rad i*cal (r[a^]d [i^]*kal), a. [F., fr. L. radicalis having roots, fr. radix, icis, a root. See {Radix}.] 1. Of or pertaining to the root; proceeding directly from the root. [1913 Webster] 2. Hence: Of or pertaining to the root or… …   The Collaborative International Dictionary of English

• Radical quantity — Radical Rad i*cal (r[a^]d [i^]*kal), a. [F., fr. L. radicalis having roots, fr. radix, icis, a root. See {Radix}.] 1. Of or pertaining to the root; proceeding directly from the root. [1913 Webster] 2. Hence: Of or pertaining to the root or… …   The Collaborative International Dictionary of English

• Radical sign — Radical Rad i*cal (r[a^]d [i^]*kal), a. [F., fr. L. radicalis having roots, fr. radix, icis, a root. See {Radix}.] 1. Of or pertaining to the root; proceeding directly from the root. [1913 Webster] 2. Hence: Of or pertaining to the root or… …   The Collaborative International Dictionary of English