| 单词 | sexennial |
| 释义 | Word Frequency sexennial(sɛkˈsɛnɪəl) adjective 1. occurring once every six years or over a period of six years noun 2. a sixth anniversary Derived forms sexennially (sexˈennially) adverb Word origin C17: from Latin sexennis of six years, from sex six + annus a year |
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