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

To burst forth; to eject matter (of a star, volcano, geyser, etc.). → eruptive variable.

From L eruptus "burst forth, broken out," p.p. of erumpere "to break out, burst forth," from → ex- "out" + rumpere "to break, rupture."

Osdaridan, from os-, → ex- + daridan "to tear, rend, lacerate;" Mid.Pers. darridan "to tear, split;" Av. dar- "to tear," dərəta- "cut," auua.dərənant- "shattering;" cf. Skt. dar- "to crack, split, break, burst," darati "he splits;" Gk. derein "to flay," derma "skin;" P.Gmc. *teran; O.E. teran; E. tear; Ger. zerren "to pull, to tear," zehren "to undermine, to wear out;" PIE base *der- " to split, peel, flay."

1) An act, process, or instance of erupting; something that is erupted or ejected.
2) → flare.
3) Geology: The ejection of molten rock, steam, etc., as from a volcano or geyser.

Verbal noun of → erupt.

Relating to, formed by, characterized by, or producing → eruption.

→ eruption; → -ive.

An astronomical object such as a → variable star, a → nova, a → young stellar object, etc. characterized by abrupt changes of luminosity.

→ eruptive; → object.

A huge solar prominence which has previously been quiescent but suddenly starts to lift up from the → photosphere with velocities of several hundred km/s and escapes into the → interplanetary space. Eruptive prominences with the highest velocities have been observed at 1300 km/s, reaching heights of 1 million km above the photosphere. Such prominences are often observed at the solar limb, in association with → coronal mass ejections. On the Sun's disk, the equivalent phenomenon is an eruptive filament.

→ eruptive; → prominence

same as → cataclysmic variable.

→ eruptive; → variable.

The explosive ejection of superheated matter from a → volcano.

→ volcanic; → eruption.