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Sleep movement

the folding together of leaflets, petals, etc, that occurs at night in certain plants, such as the prayer plant (Maranta leuconura)


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  • Sleep on something

    sleep in sleep on something Consider something overnight before deciding, as in I don’t know if I want to go on such a long hike; let me sleep on it. This usage was first recorded in 1519 in the state papers of King Henry VIII: “His Grace … said that he would sleep and dream […]

  • Sleep-out

    adjective 1. live-out. noun 2. a person who lives elsewhere than at the place of employment. 3. an act or instance of sleeping outdoors.

  • Sleepover

    noun 1. an instance of sleeping over, as at another person’s house. 2. a person who sleeps over. noun 1. (informal, mainly US) an instance of spending the night at someone else’s home

  • Sleep-over

    verb (used without object), slept, sleeping. 1. to take the rest afforded by a suspension of voluntary bodily functions and the natural suspension, complete or partial, of consciousness; cease being awake. 2. Botany. to assume, especially at night, a state similar to the sleep of animals, marked by closing of petals, leaves, etc. 3. to […]

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