IPA: /ˌɪntərˈnʌnʃəl/
KK: /ɪnˈtɜrnʌnʃəl/
Relating to a type of neuron that connects other neurons in a pathway.
The internuncial neurons play a crucial role in transmitting signals between sensory and motor neurons.
Internuncial → It is formed from "inter-" (meaning between) and "nuncius" (meaning messenger). The word describes something that acts as a messenger or intermediary between two parties.
Think of a messenger that operates 'between' ('inter-') two points — that's what internuncial means.
No commonly confused words.