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 {type}s with {class}es 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)].