quinquennial
英 [kwɪŋ'kwenɪəl]
美 [kwɪn'kwɛnɪəl]
- adj.
- n. 5周年；5年の期間；5年ごとに起こる出来事
英語の語源
- quinquennial (adj.)
- late 15c., "lasting five years," from Latin quinquennis "of five years, celebrated every fifth year," from quinque- "five" (see quinque-) + ending from biennial, etc. Meaning "happening once every five years" attested from c. 1600. As a noun from 1895; earlier quinquennal (1610s).