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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
22 13
Student form of torture. Tricks kids into thinking they are going to make drugs and bombs, but involves math and more math. Pointless unless you are going to be a chemist.
"Chemistry is the reason why i dropped out and killed my dog"
by sweetemotion09 May 21, 2007
25 47
Some fucked up bootleg-ass bullshit that's not a real science. The bastard child of physics.
Yo I just rolled out of chemistry and capped some bitches because I was so distressed by chemistry's apathy towards SI units and scientific procedure.
by PercolatinPhyser October 30, 2007
20 55
The extremely boring science of explaining why chemical stuff happens. Studying chemistry instantly removes much of the fun that can be had when lighting things on fire by explaining how it happens. Teachers of this heinous subject are believed to have no soul, be mentaly unstable, or both. Also, people on the chemistry team enjoy similar status as those on the Math team (complete losers who find fun in academic achievement).
Jack: Yo Jill you wanna come to the chemistry competition with me? We're gonna totally own those guys from Sackville High. Their pocket protectors are pink. Those losers *nyehehehehehe*

Jill: Jack, you're a loser. *walks away*
by The BR December 21, 2006
24 72