Web Results
yawn
[yawn]
VERB (USED WITHOUT OBJECT)
1.
to open the mouth somewhat involuntarily with a prolonged, deep inhalation and sighing or heavy exhalation, as from drowsiness or boredom.
2.
to open wide like a mouth.
3.
to extend or stretch wide, as an open and deep space.
VERB (USED WITH OBJECT)
4.
to say with a yawn.
5.
Archaic. to open wide, or lay open, as if by yawning.
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Source: Dictionary.com

Yawn

en.wikipedia.org/wiki/Yawn

A yawn is a reflex consisting of the simultaneous inhalation of air and the stretching of the eardrums, followed by an exhalation of breath. Yawning ( oscitation) ...

Why We Yawn - WebMD

www.webmd.com/brain/news/20110923/why-we-yawn

Sep 23, 2011 ... People yawn more easily in cooler temperatures, supporting the idea that yawning cools the brain.

The Real Reason We Yawn - WSJ

www.wsj.com/articles/the-real-reason-we-yawn-1408403897

Aug 19, 2014 ... Scientists working to unravel the mystery surrounding the yawn, and why it's contagious, have discovered that yawning is much more ...

What makes us yawn? | HowStuffWorks

science.howstuffworks.com/life/inside-the-mind/human-brain/question572.htm

Next time you're in a meeting, try this little experiment: Take a big yawn, cover your mouth out of courtesy and watch to see how many people follow suit. There's ...

Why do we yawn? Nothing to do with boredom - we're just cooling ...

www.independent.co.uk/news/science/why-do-we-yawn-nothing-to-do-with-boredom-were-just-cooling-our-brains-say-scientists-9356468.html

May 12, 2014 ... A new study has suggested that the reason we yawn has nothing to do with tiredness or boredom, but actually works in order to cool down our ...

Why do we yawn? (Everyday Mysteries: Fun Science Facts from the ...

www.loc.gov/rr/scitech/mysteries/yawn.html

The study of yawning is anything but boring. It boasts a rich history of theories that go back to Antiquity, but thus far the biological function of yawning remains a  ...

The Surprising Science of Yawning - The New Yorker

www.newyorker.com/science/maria-konnikova/the-surprising-science-of-yawning

Apr 14, 2014 ... Yawning may be the opposite of what we think—not a signal of sleepiness but a signal that it's time to act.

BBC - Future - One of science's most baffling questions? Why we yawn

www.bbc.com/future/story/20140811-warning-this-may-make-you-yawn

Aug 12, 2014 ... Yawning has puzzled scientists for more than two millennia. But could a new theory settle the question once and for all? David Robson ...

Answer
yawn | Define yawn at Dictionary.com
dictionary.reference.com/browse/yawn
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Popular Q&A
Q: What is a yawn?
A: A yawn is a reflex of simultaneous inhalation of air and stretching of the eardrums, Read More »
Source: www.chacha.com
Q: What is a yawn?
A: A yawn (synonyms chasma, pandiculation, oscitation from the Latin verb oscitare, to open the mouth and have bad smells come out is a reflex of deep inhalation a... Read More »
Source: www.askpedia.com
Q: What is a yawn.
A: A yawn is to open the mouth somewhat involuntarily with a prolonged, deep inhalation and sighing, as from drowsiness or boredom. A Biologist's answer would be: ... Read More »
Source: www.chacha.com
Q: What is a yawn?
A: A yawn (synonyms chasma, oscitation from the Latin verb oscitare, to open the mouth wide) is a reflex of deep inhalation and exhalation associated with being ti... Read More »
Source: uk.answers.yahoo.com
Q: What is a yawning?
A: yawning: an involuntary intake of breath through a wide open mouth Read More »
Source: www.kgbanswers.com