mo
le
cule
Plural
molecules
1
the smallest structure of a substance consisting of a group of atoms
- Molecules are made up of two or more atoms bonded together.
- The structure of a molecule determines its properties and behavior.
- Some molecules are simple, like oxygen, which is made of two oxygen atoms.
- Larger molecules, like proteins, play important roles in living organisms.
- Chemical reactions often involve the breaking and forming of molecules.
2
a very tiny amount or piece of something
- There wasn't a molecule of doubt in her mind.
- He didn't show a molecule of regret for what he'd done.
- Not a molecule of dust could be found in the spotless room.
- The speech lacked even a molecule of sincerity.
- His explanation didn't contain a molecule of truth.