(computing) A real or emulated computer that uses a pushdown stack rather than individual machine registers to evaluate each subexpression in a program.

(physics) A shock wave formed by the fusion of incident and reflected shock waves from an explosion.

plural of Mach stem

(computing theory) A finite-state machine whose output values are determined solely by its current state.

(computing theory) A finite-state machine whose output values are determined by both its current state and its current inputs.

plural of machine elf

A kind of otherworldly humanoid figure sometimes seen during dimethyltryptamine (DMT) hallucinations.

(philosophy) The mental activity that occurs in parallel with physical action, but with no known way for the two to interact, according to theories of mind-body dualism.

plural of macho dancer

An icemaker.