quantum
/ˈkwɑːntəm/
NOUN
1. A discrete amount or portion
A specific, separate amount or portion of something, considered as a distinct unit rather than an indefinite or continuous quantity.
1.1. A specific amount or measure
A definite amount, portion, or unit of something that can be identified or measured.
Synonyms
Examples
- The agreement specifies the quantum of compensation payable to each party.
- The committee discussed the quantum of funding required for the project.
Related Words
NOUN
2. The smallest discrete amount in physics
The smallest discrete quantity of a physical property, such as energy, that a system can possess or exchange according to quantum theory.
2.1. Fundamental physical unit
A discrete, indivisible unit of a physical property involved in quantum phenomena, such as a quantum of energy or electromagnetic radiation.
Synonyms
- unit
- discrete amount
- minimum quantity
- elementary quantity
Examples
- An atom can absorb or emit a quantum of energy when an electron changes energy levels.
- The photon is a quantum of electromagnetic radiation.
- Physicists study how matter and energy behave at the quantum level.