VHF

noun

1. a group of illnesses caused by a viral infection (usually restricted to a specific geographic area); fever and gastrointestinal symptoms are followed by capillary hemorrhage

   noun.state

   Synonyms haemorrhagic fever hemorrhagic fever viral haemorrhagic fever viral hemorrhagic fever

   Source: WordNet 3.0

2. 30 to 300 megahertz

   noun.attribute

   Synonyms very high frequency

   Source: WordNet 3.0