oxytocin

noun

oxy·​to·​cin ˌäk-si-ˈtō-sᵊn 

: a pituitary octapeptide hormone C₄₃H₆₆N₁₂O₁₂S₂ that stimulates especially the contraction of uterine muscle and the secretion of milk

Examples of oxytocin in a Sentence

Recent Examples on the Web

Data published on the National Library of Medicine's website, says that having pets while working form home can enhance the experience, because their presence increases humans' endogenous oxytocin concentrations and reduces heart rate and blood pressure. —Joseph Epstein, Newsweek, 11 Dec. 2024

Cuddling, holding hands, and gentle massages with a partner release oxytocin and foster closeness, reduces stress, and enhances well-being.1012 Summary Orgasms offer numerous benefits, from stress reduction and better sleep to a stronger immune system and mood improvements. —Lindsay Curtis, Verywell Health, 7 Oct. 2024

Neuroscience shows that connection releases feel-good chemicals like oxytocin and dopamine, boosting motivation and creativity. —Expert Panel®, Forbes, 7 Oct. 2024

The body releases oxytocin and prolactin after orgasm. —Lindsay Curtis, Verywell Health, 7 Oct. 2024

Word History

Etymology

oxytoc(ic) + -in entry 1

Note: According to Science News Letter, vol. 12, no. 341 (October 22, 1927), p. 259, the name was given after pituitary extracts were "obtained in purified form from a single gland by Dr. Oliver Kamm and associates working in the research laboratories of Parke Davis and Company at Detroit."

First Known Use

1928, in the meaning defined above

Medical Definition

oxytocin

noun

oxy·​to·​cin -ˈtōs-ᵊn 

1

: an octapeptide hormone C₄₃H₆₆N₁₂O₁₂S₂ secreted by the posterior lobe of the pituitary gland that stimulates especially the contraction of uterine muscle and the secretion of milk

called also alpha-hypophamine

2

: a synthetic version of oxytocin used especially to initiate or increase uterine contractions (as in the induction of labor) see pitocin