1. spectrum

noun. ['ˈspɛktrəm'] an ordered array of the components of an emission or wave.

Rhymes with Atomic Spectrum

2. spectrum

noun. ['ˈspɛktrəm'] a broad range of related objects or values or qualities or ideas or activities.

3. atomic

adjective. ['əˈtɑːmɪk'] (weapons) deriving destructive energy from the release of atomic energy.

4. atomic

adjective. ['əˈtɑːmɪk'] immeasurably small.