Fasili ya kamusi ya neno "ukadirio" ni kitendo cha kukadiria au kukokotoa kitu kwa kiwango fulani cha usahihi au ukaribu, bila kuwa sahihi au kamili. Inaweza pia kurejelea hesabu iliyokadiriwa au mbaya au thamani ambayo si kamili lakini iko karibu vya kutosha kuwa muhimu. Katika hisabati, ukadiriaji unarejelea mbinu ya kupata thamani ambayo iko karibu na thamani kamili ya chaguo za kukokotoa au mlingano, lakini si lazima thamani halisi yenyewe.
1. She wore black, her own approximation of guard uniform complete with daggers sheathed in those famous boots of hers.
2. It was a rough approximation of a man with a stubbly beard.
3. The transport had landed in the middle of a grassy meadow fifty yards wide and one hundred yards long, by his approximation.