An Etymological Dictionary of Astronomy and Astrophysics

A → post-AGB star that undergoes a last → thermal pulse when it is already on the → white dwarf  → cooling track. The thermal pulse will expand the hot central star, whereby hydrogen will be ingested into the → helium burning shell. This will temporarily return the star to the → AGB phase it has previously left.

See also: → born; → again; → asymptotic giant branch; → star.