An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

Of or relating to → ballistics.

A missile that after being launched and guided in the early part of its flight, travels unpowered in a ballistic trajectory.

→ ballistic; → missile.

Transfer of microbes and biochemical compounds from a planet to another due to meteoric impacts. Debris being knocked off a planet like Mars can reach escape velocity and enter the atmosphere of another planet with passenger micro-organisms intact.

→ ballistic; → panspermia.

A curved path followed by an unpowered object that is being acted upon only by gravitational forces and the friction of the medium through which it moves.

→ ballistic; → trajectory.

Audible disturbance or wave caused by the compression of air ahead of a projectile in flight.

→ ballistic; → wave.

The science of the motion and behavior of → projectiles. The study of the functioning of firearms.

From L. ballista "ancient military machine for hurling stones," from Gk. ballistes, from ballein "to throw," from PIE *g^welH₁- "to throw;" cf. Pers. garzin "arrow;" Av. niγr- "to throw down;" Khotanese (+ *abi-, *ui-) bīr- "to throw, sow;" Proto-Iranian *garH- "to throw."

Partâbik, from partâb "a throw, an arrow that flies far," partâbidan "to throw," + -ik, → -ics; partâbšenâsi, from partâb + -šenâsi, → -logy.