half-hourly

Adjective

 * 1) Once every half-hour, every 30 minutes.
 * a half-hourly train service

Translations

 * Russian:

Adverb

 * 1) At intervals of a half-hour, every 30 minutes.
 * Take this medicine half-hourly.

Translations

 * Arabic: كل نصف ساعة
 * Chinese:
 * Mandarin: 每半小時
 * Esperanto: duonhore
 * Finnish: puolen tunnin välein
 * German: jede halbe Stunde
 * Japanese: 30分おき
 * Russian: ка́ждые полчаса́, два ра́за в ча́с