subtotal Syllabification: (sub·to·tal)Pronunciation: /ˈsəbˌtōtl/Translate subtotal | into French | into German | into Italian | into Spanish Definition of subtotal noun the total of one set of a larger group of figures to be added. verb (subtotals, subtotaling, subtotaled ; Britishsubtotals, subtotalling, subtotalled) [with object] add (numbers) so as to obtain a subtotal. adjective Medicine (of an injury or a surgical operation) partial; not total. subtotal in other Oxford dictionaries Definition of subtotal in the British & World English dictionary