Collimated

Verb

1. collimated

   (past of collimate)

Full definition of collimated

Adjective

1. of light beams whose rays are parallel and thus has a plane wavefront2008. "Wolf-Rayet stars are also argued to give rise to gamma-ray bursts, a related but rare class of explosions characterized by highly-collimated relativistic jets." An extremely luminous X-ray outburst at the birth of a supernova http://arxiv.org/pdf/0802.1712v2