Definition of hormone
1 : a product of living cells that circulates in body fluids (such as blood) or sap and produces a specific often stimulatory effect on the activity of cells usually remote from its point of origin; also : a synthetic substance that acts like a hormone
2 : sex hormone
hormonelikeplay \ˈhȯr-ˌmōn-ˌlīk\ adjective
Recent Examples of hormone from the Web
Occasionally a drug is an animal product itself, such as the anti-clotting injection heparin or the female hormone product Premarin.
Less stress, more relaxation and a boost of oxytocin (the love hormone) lead to a happier you.
The waiting period went from two years after surgery to one year after the start of hormone replacement theory.
Every mom trapped at home with a new baby has cranked up Lemonade and sung her way through the entire album as hormone tears stream down her face.
No matter the good intentions of the parents or how self-sacrificing their desire to keep their child at home, adolescence, with its onrush of agitating hormones, tends to make home care an impossibility.
Fat is needed for production of cell membranes and hormones and aids in the absorption of fat-soluble vitamins and beneficial plant metabolites such as polyphenols.
The study found that transitions — including hormone therapy and medical procedures like surgery — would cost the Pentagon $2.9 million to $4.2 million a year, a tiny fraction of its $610 billion budget.
Males relentlessly bound from partner to partner, as massive hormone releases in their bodies cause their immune systems to crash and their fur to fall out.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hormone'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
HORMONE Defined for English Language Learners
Definition of hormone for English Language Learners
: a natural substance that is produced in the body and that influences the way the body grows or develops
HORMONE Defined for Kids
Definition of hormone for Students
: any of various chemical substances produced by body cells and released especially into the blood and having a specific effect on cells or organs of the body usually at a distance from the place of origin
Medical Definition of hormone
1a: a product of living cells that circulates in body fluids (as blood) or sap and produces a specific often stimulatory effect on the activity of cells usually a distance from its point of synthesis Some people develop insulin resistance, a condition in which response to the hormone is muted and the body must produce excess insulin to maintain healthy blood-glucose concentrations.—Ben Harder, Science News, 18 May 2002b: a synthetic substance that acts like a hormone
2: sex hormone I discovered I had the classic signs of perimenopause, the prelude to “the change” when hormones yo-yo before menstrual periods cease altogether …—Beth Witrogen McLeod, Cooking Light, April 2000
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