Longman Dictionary of Contemporary English homepage

Date: 1900-2000
Language: Greek
Origin: hormon, from horman 'to cause to move around'

hormone

noun
     
Related topics: Biology
hor‧mone [countable]
HB a chemical substance produced by your body that influences its growth, development, and condition
hormonal adjective:
hormonal changes

Dictionary pictures of the day
Do you know what each of these is called?
What is the word for picture 1? What is the word for picture 2? What is the word for picture 3? What is the word for picture 4?
Click on any of the pictures above to find out what it is called.

Explore our topic dictionary