The word "agastroneuria" is a mouthful to say and spell. It is composed of the prefix "a-" meaning "not" or "without," "gastr-" meaning "stomach," and "-neuria" meaning "nerve condition." Its correct pronunciation is [əˌɡæstroʊˈnjʊriə] and the IPA phonetic transcription breaks it down as follows: the first syllable is unstressed ([ə]), followed by the stressed syllable starting with the "g" sound ([ɡæstroʊ]), then the "n" sound ([n]), and finally ending with the "ur" sound ([jʊriə]).
Lowered nervous control of the stomach.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.