1. occurring or happening twice an hour
Usage: rare; technical

1. twice an hour; at intervals of thirty minutes
Usage: rare; technical

Examples

• The medication should be taken bihourly for the first day of treatment.
• The bihourly bus schedule means a vehicle arrives every thirty minutes.
• Bihourly measurements were recorded throughout the experiment.
• The system performs bihourly backups to ensure data safety.