My first definition of chemistry is the study of chemicals (that's how I remember it) and how they react with each other and how to describe the experience and experiments in the most precise and concise words to be interpreted by other people in the scientific community and hopefully the non-scientific community.

My second definition of chemistry is from pop culture, which seems to mean how people relate to each other. A higher chemistry means people get along with each other well. A lower chemistry means people get along poorly or disagree most of the time.
NOTE: This example tries to combine both definitions to get a shared meaning.

Example: The chemicals are having a good chemistry with each other and reacting to beget inorganic or organic products. Sodium hydroxide and hydrochloric acid have excellent chemistry and marry and form their children called sodium chloride and dihydrogen monoxide (commonly known as water by its common name). At the atomic level, the ions are chemically bonding tightly! Yep, it's a real close lovely relationship!
by A. Pupil October 13, 2009
The Science of matter and physical objects.
The study of chemicals and substances
A subject interpreted by morons who think everything related to it is explosive
Moron: You terrorist!

Normal Guy: Not everything is about explosives in chemistry
by CaptainWhiteyBoy March 19, 2007
Easy class in high school, pain in the ass in college. Be well-prepared.
Wow, my first lab in this chemistry class lasted four hours and my eyes are drier than that time I tried weed.
by George! May 16, 2006
The study of molecules and their interaction.
Chemistry is a game for dope-ass motherfuckers.
by Didds March 25, 2003
the attraction between two people
I wanna kiss that girl to see if there's any chemistry
by iwishihadit January 26, 2004
A science in which one extends their knowledge of the Periodic Table by occasionally mixing the wrong chemicals, lighting stuff on fire, freezing stuff in liquid nitrogen, highlighting the hell out of their periodic table until it looks like a unicorn licked it, and understanding how all this stuff applies to the little tiny bits that make up every last bit of everything.
Person 1: Hey! Did you guys do that lab today in Chemistry with the thing that blew up?

Person 2: Yeah! That was so totally epic!
by Dreamweaver38 April 08, 2010
A 'relivent' subject 'taught' in high schools designed to ideally make sure you can't get into collage after failing it in your exams due to the teacher you had being an irresponsible, irritating, uncaring, potentially unqualified hater of children.
Chemistry was the reason she lived in the convent.
by El_ June 11, 2006
Originated in Slovenia from a herd of aboriganie bovine. The rarest and deadliest form of leprosy. Comes in six different periods or phases. In its developed stages, body parts involuntarily sever connection at the slightest vibration.
I just found out I have chemistry, 3rd period.
by Bhevis September 24, 2003

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