half-hourly (HyperDic hyper-dictionary)

English > 2 senses of the word *half-hourly*:
ADJECTIVE	all	half-hourly	occurring ever half hour
ADVERB	all	half-hourly	every thirty minutes, every half hour

English > *half-hourly*: 2 senses > adjective 1
Meaning	Occurring ever half hour.
Broader	periodic, periodical	happening or recurring at regular intervals
Adverbs	half-hourly	every thirty minutes, every half hour

English > *half-hourly*: 2 senses > adverb 1
Meaning	Every thirty minutes, every half hour.
Adjectives	half-hourly	occurring ever half hour

HyperDic: half-hourly