Top Definition
Since the overused LOL has become cliched, UCM is making its way in. Literally, the acronym is short for "Unexpected Chuckle Moment." UCM should only be used in moments where one actually bursts out in a chuckle, ideally in surprise.
Alice was in her boring work meeting when she read an email from her sister, causing an unexpected - and unwanted - giggle. She responded with, "UCM! I couldn't hold it in!"
by almoagnadna December 11, 2008
It is a medical school located in the Trans Yamuna area of Delhi. It stands for University College of Medical Sciences. It is associated with Guru Teg Bahadur Hospital.

The best part about it is that it toughens you up into a smart and bold person, from a child; ready to face anything in this world..... The docs from this place have far excelled into every known sphere of life....... be it music (Dr. Palash Sen, founding member of Euphoria music band) or MBA or even as IAS; besides being successful doctors in virtually every country in the world, be it India, USA, UK, Australia, New Zealand, UAE..... among others.
The Demonym of a person belonging to UCMS is UCite.

I am a UCite and proud of it.......

by tibia-mandible November 05, 2011
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