IPA: //ˈhaɪpərfaɪn//
KK: /haɪpərˈfaɪn/
Referring to a very small or precise detail, especially in the context of atomic and molecular structures.
The hyperfine splitting of the spectral lines provides important information about the atomic structure.
Hyperfine → It is formed from "hyper-" (meaning over or beyond) and "fine" (from Latin "finis", meaning end or limit). The term "hyperfine" refers to a level of precision that goes beyond the usual fine measurements, often used in physics to describe extremely small energy differences.
Think of 'hyper-' meaning 'beyond' and 'fine' relating to 'limits' — together, they describe something that is beyond the usual limits of precision.