This glossary was compiled by Don B at jaguarforums.com and is reproduced here
with his permission
Yard = Unit of length, 1 yard = 3 feet = 0.9144 Meter
YCCC = Yellow Chromate Conversion Coating, coating applied over cadmium to prevent white oxidation
YMMV = “Your mileage may vary” (“Your experience may differ from mine”)