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Definition of "oxytocin" []

  • A short polypeptide hormone, C43H66N12O12S2, released from the posterior lobe of the pituitary gland, that stimulates the contraction of smooth muscle of the uterus during labor and facilitates ejection of milk from the breast during nursing. (noun)
  • A polypeptide hormone, secreted by the pituitary gland, that stimulates contractions of the uterus or oviduct and ejection of milk in mammals; alphahypophame: used therapeutically for aiding childbirth. Formula: C43H68N12O12S2 (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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Use "oxytocin" in a sentence
  • "Well, the reality is, there is a hormone called oxytocin, that is released in both men and women ..."
  • "The gene creates a docking station for a hormone called oxytocin, which is involved in all sorts of emotions and social behaviours, from trust to sexual arousal to empathy."
  • "Research suggests oxytocin is released when a woman feels safe and secure, when lights are dim, when there are few disturbances and there is quiet and privacy — not exactly the conditions in most hospitals."