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gradability

or gradeability

[grey-duh-bil-i-tee] /ˌgreɪ dəˈbɪl ɪ ti/
noun, Transportation.
1.
a measure of a truck's pulling power expressed as the steepest grade the truck can climb with a full load.
Compare grade (def 9).
Origin of gradability
1950-1955
1950-55; grade + -ability
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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