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

TELOS

   1. The LeLisp Version 16 Object System.  Also used in
   EuLisp.  The object-oriented core of EuLisp.
   Incorporates ideas from CLOS, ObjVLisp and OakLisp.
   Total merging of types with classes and message-passing
   with normal function application.

   2. A Pascal-based AI language.

   ["Design Rationale for TELOS, a Pascal-based AI Language",
   Travis et al, SIGPLAN Notices 12(8) (Aug 1977)].