A substance that has two or more atoms chemically bonded together. Examples are H2, H2O, N2, O2, etc. Remember, a molecule is formed by as least two or more ATOMS, so a single oxygen atom (O) is not a molecule.
Sometimes, molecule and compound are very hard to distinguish, for example, H2O (aka water) can be both a molecule AND a compound.
Hydrogen is a molecule because it is made of two hydrogen atoms (H2).
Particles that are brewed from ones feces that are expelled from the anus and become airborne after a fart that may enter an innocent bystander's nose or mouth and ends in a result of ass molecules being comsumed into ones nostrils and lungs getting to know someone's fecal DNA.
Colin passed gas? Oh Great! Now I have Colin's ass molecules in my mouth!
slang word for "pure" MDMA, or, ectasy used in the hippie scene. also known as mollyit comes as a crystalline powder in gelcaps. normal effective dose is .1 grams for roughly 20$ per. molecule is a way more heady alternative than regular rolls.