septennial

a. 延续七年的, 每七年一次的

发音

US /sɛpˈtɛniəl/

释义与例句

adj.
  1. 1.

    Of or relating to a 7 year period.

    septennial parliaments... septennial elections...

词源

From septennium + -al, from Latin septennis (“7-year”), q.v.

来源：wiktionary