The Free On-line Dictionary of Computing (19 January 2023):

VHDL

   Very High Speed Integrated Circuit (VHSIC) Hardware
   Description Language.  A large high-level VLSI design
   language with Ada-like syntax.  The DoD standard for hardware
   description, now standardised as IEEE 1076.

   ["VHSIC Hardware Description Language", M.R. Shahdad et al,
   IEEE Computer 18(2):94-103 (Feb 1985)].