in·​ter·​nu·​cle·​ar ˌin-tər-ˈnü-klē-ər How to pronounce internuclear (audio)
 nonstandard  -kyə-lər
: situated or extending between nuclei
At small internuclear separations, well within the electrons' orbiting radii, the electrons cannot distinguish between the two nuclear centers.Jack S. Greenberg and Walt Greiner

Word History

First Known Use

1842, in the meaning defined above

Time Traveler
The first known use of internuclear was in 1842

Dictionary Entries Near internuclear

Cite this Entry

“Internuclear.” Dictionary, Merriam-Webster, Accessed 21 Sep. 2023.

Medical Definition


in·​ter·​nu·​cle·​ar ˌint-ər-ˈn(y)ü-klē-ər How to pronounce internuclear (audio)
: situated or occurring between atomic or biological nuclei
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