re·cur·sive
adjective/rɪˈkɜːsɪv/
/rɪˈkɜːrsɪv/
(specialist)- involving a process that is applied repeatedly
递归的；循环的 Word Originlate 18th cent. (in the general sense): from late Latin recurs- ‘returned’ (from the verb recurrere ‘run back’) + -ive. Specific uses have arisen in the 20th cent.