Main Entry: ¹bi·as

Pronunciation: \ˈbī-əs\

Function: noun

Etymology: Middle French biais

Date: 1530

1 : a line diagonal to the grain of a fabric; especially : a line at a 45 degree angle to the selvage often utilized in the cutting of garments for smoother fit
2 a : a peculiarity in the shape of a bowl that causes it to swerve when rolled on the green in lawn bowling b : the tendency of a bowl to swerve; also : the impulse causing this tendency c : the swerve of the bowl
3 a : bent, tendency b : an inclination of temperament or outlook; especially : a personal and sometimes unreasoned judgment : prejudice c : an instance of such prejudice d (1) : deviation of the expected value of a statistical estimate from the quantity it estimates (2) : systematic error introduced into sampling or testing by selecting or encouraging one outcome or answer over others
4 a : a voltage applied to a device (as a transistor control electrode) to establish a reference level for operation b : a high-frequency voltage combined with an audio signal to reduce distortion in tape recording

synonyms see predilection

— on the bias : askew, obliquely