superluminal adj.

Saying that they are ‘spread with super-luminal velocity’ is about as helpful as saying that twice two turns with super-luminal velocity into four.

An imaginary mass has no physical significance in our own subluminal Universe, so it has long been customary to dismiss superluminal velocities at once, and say that faster-than-light particles are impossible because there can be no such thing as an imaginary mass.

A warcraft of the Raptor class, lately modified to accommodate a superluminal drive, it moved faster than most, agilely responsive to he thrust of its gravity polarizers.

Don’t start drawing up blueprints for that time machine just yet, though; even though these experiments in superluminal propagation aren’t completely understood, it’s generally acknowledged that they don’t violate causality.

There had been no warning of its existence, no detectable superluminal quantum distortion waves which were the signature of human ships and missiles.