half-hourly
adverb
No English definition recorded for this entry.
L191584 on Wikidata ↗Wiktionary
adj
Etymology: From half-hour + -ly.
- Once every half-hour, every 30 minutes.
“a half-hourly train service”
“A new half-hourly service between Stratford [Greater London] and Meridian Water was introduced on 9 September by Greater Anglia.”
adv
Etymology: From half-hour + -ly.
- At intervals of a half-hour, every 30 minutes.
“Take this medicine half-hourly.”