Depression and addiction, for example, have several things in common, including: 1  Loss of interest in once-enjoyable activities. 2  Fatigue. 3  Feelings of hopelessness. 4  Reckless behavior. 5  Irritability.
Deflection Temperature Testing of Plastics. The deflection temperature is a measure of a polymer's ability to bear a given load at elevated temperatures. The deflection temperature is also known as the 'deflection temperature under load' (DTUL), 'heat deflection temperature', or 'heat distortion temperature' (HDT).
Webster Dictionary(0.00 / 0 votes)Rate this definition: 1  Deflection(noun) the act of turning aside, or state of being turned aside; a turning from a right line or proper course; a bending, esp. downward; deviation. 2  Deflection(noun) the deviation of a shot or ball from its true course.