- a set of quantum mechanical states related to each other whose single energy level can be split into a specific number of distinct energy levels
- a line in a spectrum composed of a group of related lines
multipl(e) + -et
See multiplet in American Heritage Dictionary 4
- A spectral line having more than one component, representing slight variations in the energy states characteristic of an atom.
- Any of several classes or groupings of subatomic particles, such as the nucleon, that are similar in most properties but different in electric charge.
Origin: + (doubl)et
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