Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun Movement or activity of an organism in response to a stimulus such as light.

from The Century Dictionary.

  • noun Any manifestation of dynamic energy.
  • noun In cytology, a short expression for karyokinesis.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun the movement of an organism in response to an external stimulus

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a movement that is a response to a stimulus but is not oriented with respect to the source of stimulation

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Greek kīnēsis, movement, from kīnein, to move; see kei- in Indo-European roots.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Ancient Greek κίνησις (kinēsis, "motion, movement").

Examples

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