There are 3 definitions of hf in English:

hf1

Line breaks: hf

abbreviation

Half: no hf titles to vols 2 and 3

Definition of hf in:

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Word of the day humoresque
Pronunciation: ˌhjuːməˈrɛsk
noun
a short, lively piece of music

There are 3 definitions of hf in English:

HF3

Line breaks: HF

abbreviation

Physics
High frequency: position reporting is currently dependent on HF voice communications

Definition of hf in: