Hddv

heavy-duty diesel vehicle

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Hd-dvd
abbreviation 1. High Definition DVD: a DVD capable of storing between two and four times as much data as a standard DVD
Hdf
Hierarchical Data Format 1. Hereditary Disease Foundation 2. hierarchical data format
Hdfl
A single assignment language. [“Methods for Handling Structures in Data-Flow Systems”, J.L. Gaudiot, Proc 12th Intl Symp Comp Arch, June 1985].