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

Having the form of a parabola.

of or pertaining to → parabola.

An antenna comprising a parabolic reflector with a receiving and/or transmitting element positioned at or near its focal point.

→ parabolic; → antenna.

A concave mirror that has the form of a paraboloid of revolution.

→ parabolic; → mirror.

An orbit whose overall shape is like a parabola; it is the limiting case between an elliptical orbit (eccentricity less than 1) and a hyperbolic orbit (eccentricity larger than 1). The speed necessary to form a parabolic orbit is known as the escape velocity.

→ parabolic; → orbit.

The speed necessary to form a parabolic orbit around a gravitational center. It is also the minimum speed necessary to escape from the gravitational pull of a body.

→ parabolic; → velocity.