vt, -brat*ed  -brat*ing  1  :  to ascertain the caliber of (as a thermometer tube)  2  :  to determine, rectify, or mark the graduations of (as a thermometer tube)  3  :  to standardize (as a measuring instrument) by determining the deviation from a standard so as to ascertain the proper correction factors cal*i*bra*tion n cal*i*bra*tor n 
 
 
 
Similar sounding terms:  Co·lu·bri·dae  gly·bur·ide 
 
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