Diurnal



GRE 蓝宝 Barron

解释

GRE 红宝书

• adj. 白昼的, 白天的
• ［英］ adj. 白昼的, 白天的 ( of daytime)
• ［记］ di ( 白天) +urnal ( ...的) -> 白天的;
• ［同］ 参考: nocturnal ( 夜间的) 同根词: diary ( 日记) , dial ( 日晷)

Webster Collegiate

I. adjective

• Etymology: Middle English, from Latin diurnalis — more at journal
• Date: 14th century
• 1.
  • a. recurring every day <diurnal tasks>
  • b. having a daily cycle <diurnal tides>
• 2.
  • a. of, relating to, or occurring in the daytime <the city's diurnal noises>
  • b. active chiefly in the daytime <diurnal animals>
  • c. opening during the day and closing at night <diurnal flowers>
• ? diurnally adverb

II. noun

• Date: 1600
• 1. archaic diary, daybook
• 2. journal 2a

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