chromoly en · NOUN
Etymology
Blend of chromium + molybdenum.
Meanings
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(uncountable) A kind of steel alloy containing some chromium and molybdenum.
Although chromoly is heavier than aluminum, many riders favor the resilient ride of chromoly over the super-stiff ride of aluminum and are willing to have a slightly heavier bike in exchange for the more comfortable ride.
1999, Vic Armijo, The Complete Idiot's Guide to Cycling, Penguin, →ISBN, page 68: