molecule
/ˈmɒləkjuːl/
B2 · Upper Int.★★★☆☆
Simple Meaning
the smallest part of a substance that still has the properties of that substance.
When to Use
📚Academic Writing⚙️Technical
Upper Intermediate — fluent in familiar topics
Examples in Conversation
“A water molecule is made of two hydrogen atoms and one oxygen atom.”
“Can you draw the structure of that molecule for the lab report?”
Learning Path
▶Full Definition
The smallest particle of a specific element or compound that retains the chemical properties of that element or compound; two or more atoms held together by chemical bonds.
“Hydrogen chloride is a diatomic molecule, consisting of a hydrogen atom and a chlorine atom.”