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

To collapse, or cause to → collapse, inward → violently. Opposite of → explode.

Implode, from → in- + (ex)plode, from L. plaudere "to clap, beat," of uncertain origin.

Forukaftidan, from foru- "down, downward; below; beneath" (Mid.Pers. frôt "down, downward;" O.Pers. fravata "forward, downward;" cf. Skt. pravát- "a sloping path, the slope of a mountain") + kaftidan "to burst; to split," variants kaftan, kâftan "to split; to dig," (Parthian Mid.Pers. q'f- "to split;" Sogdian kβ "to spli;" Chorasmian kf- "to split, be split;" Proto-Iranian *kap-, *kaf- "to split").