| bisect | 1. To cut or divide into two parts. 2. <geometry> To divide into two equal parts. Origin: L. Bis twice + secare, sectum, to cut. Source: Websters Dictionary (01 Mar 1998) |
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| bisection | Division into two parts, especially. Two equal parts. Origin: Cf. F. Bissection. Source: Websters Dictionary (01 Mar 1998) |
| bisector | One who, or that which, bisects; especially. <geometry> A straight line which bisects an angle. Source: Websters Dictionary (01 Mar 1998) |
| bisectrix | The line bisecting the angle between the optic axes of a biaxial crystal. Source: Websters Dictionary (01 Mar 1998) |
| bisectrix, acute | <microscopy> In biaxial crystals, that principal axis of the ellipsoid of indexes which bisects the smaller angle between the optic axes. (05 Aug 1998) |
| bisectrix, obtuse | <microscopy> In biaxial crystals, that principal axis of the ellipsoid of indexes which bisects the larger angle between the optic axes. (05 Aug 1998) |