retching; dry heaving
Medical term for the act of trying to vomit without bringing anything up. The English gloss 'vomiturition' is a rare technical synonym.
As a symptom of food poisoning, retching continued.
Morning sickness has caused severe dry heaving since morning.
Standard kanji spelling for this medical term.
Mixed kanji-kana spelling; may be easier for learners to read.
Compound of 空 (から, 'empty') and 嘔 (えずき, 'retching'). The reading えずき is a native Japanese term for retching, and 空 indicates the absence of vomit.