iteration
/ˌɪtəˈreɪʃən/noun
mass noun
1- the repetition of a process or utterance重复; 复述, 重申。
1.1
- repetition of a mathematical or computational procedure applied to the result of a previous application, typically as a means of obtaining successively closer approximations to the solution of a problem反复演算。
1.2
- count noun a new version of a piece of computer hardware or software计算机硬件（或软件）的新版本。
词源
late Middle English: from Latin iteratio（n-）, from the verb iterare （see ITERATE）.