V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

OPENGL
       OPEN Graphics Language (OpenGL), "OpenGL"


The Free On-line Dictionary of Computing (30 December 2018):

Open Graphics Library
OpenGL

    (OpenGL) A multi-platform software
   interface to graphics hardware, supporting rendering and
   imaging operations.  The OpenGL interface was developed by
   Silicon Graphics, who license it to other vendors.

   The OpenGL graphics interface consists of several hundred
   functions operating on 2D and 3D objects, supporting basic
   techniques, such as modelling and smooth shading, and
   advanced techniques, such as texture mapping and motion
   blur.  Many operations require a frame buffer.  OpenGL is
   network-transparent, and a common extension to the X Window
   System allows an OpenGL client to communicate across a
   network with a different vendor's OpenGL server.

   OpenGL is based on Silicon Graphics' proprietary IRIS GL.

   OpenGL WWW Center (http://sgi.com/Technology/openGL/).

   Mesa GL (http://ssec.wisc.edu/~brianp/Mesa.html) (PD
   implementation).

   (1996-09-30)