IELTS sum Definition The total amount resulting from the addition of numbers. 中文 数字相加后得到的总数。 Example "The sum of 7 and 8 is 15." Sign in to save IELTS PDF — $25 ← sultry summary → Study tips featuring "sum" Boost Your IELTS Writing With Precise Vocabulary Related words TOEFL brighten IELTS startle GRE abide SAT abnormal TOEFL aboard TOEFL abolition IELTS upward TOEFL abort IELTS abortion SAT abrupt SAT absence TOEFL absent