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addaword.gifdefinition of irisin

noun
a type of hormone which has similar effects to when somebody does physical exercise
The newly identified hormone, called irisin, increases in the body during exercise, boosting energy expenditure and controlling blood glucose levels.
Submitted from United Kingdom on 15/01/2012 08:22:00
Definition of irisin from the Open Dictionary – a public resource hosted by Macmillan English Dictionary Online

vocal fry

a speech habit in which a speaker lowers their voice at the end of a sentence

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glottal stop

a sound made by stopping air as it passes through your throat. In some varieties of spoken...