hyperfine has definitions from the field of physics
1
[ adjective ] (physics) extremely fine or thin, as in a spectral line split into two or more components

Examples

"hyperfine structure"

Used in print

(James A. Ibers et al., "Proton magnetic resonance...)

An isotropic resonance shift of **f to lower applied fields indicates a weak isotropic hyperfine contact interaction .

Related terms

physics thin

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