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

In a → massive star, penetration of the upper layers of the → convective core into the → radiative zone due to → turbulence effects. The enlargement of the convective core results in more luminous stars in theoretical models.

→ convective; → overshooting.

→ convective overshooting.

→ core; → overshooting.

A situation in stellar interiors when the momentum of a particle carries it past its equilibrium point.

→ over-; shooting, from shoot, from O.E. sceotan "to shoot" (cf. O.N. skjota, Du. schieten, Ger. schießen), from PIE base *skeud- "to shoot, to chase, to throw, to project."

Farâzad, from farâ- "over, over against; foremost; before; onward" (Mid.Pers. fra-; O.Pers. fra- "forward, forth;" Av. frā "forth," pouruua- "first"; cf. Skt. pūrva- "first," pra- "before, formerly;" Gk. pro; L. pro; O.E. fyrst "foremost," superlative of fore, E. fore) + zad past stem of zadan "to strike, beat, dash against; to shoot" ( Mid.Pers. zatan, žatan; O.Pers.; Av. jan-, gan- "to strike, hit, smite, kill" (jantar- "smiter"); cf. Skt. han- "to strike, beat" (hantar- "smiter, killer"); Gk. theinein "to strike," phonos "murder;" L. fendere "to strike, push;" Gmc. *gundjo "war, battle;" PIE *g^when- "to strike, kill").