noun-modifying (irregular)
Technical term used as a prenominal modifier in engineering contexts, especially for mechanisms that respond to differences in motion, pressure, or other quantities.
The differential device makes the car's turning smoother.
This robot uses a differential drive system.
differential gear
differential gear; differential
differential amplifier
differential phase-shift keying; DPSK
Compound of 差 (difference) and 動 (motion), literally 'difference motion'. The exact historical derivation is uncertain, but the term is used in modern technical vocabulary.