DICTIONARY OF AUTOMOTIVE TERMS - "Nd"

NDIR

Acronym for Non Dispersive Infrared

NDIR analyzer

A non-dispersive infrared analyzer, used for analyzing concentrations of carbon monoxide and carbon dioxide in an exhaust gas sample

NDS

Acronym for Neutral drive switch

NDT method

A non-destructive testing method, such as ultrasonic testing, X-ray testing, dye-penetrant testing