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Wiktionary
pegasid

Etymology 1 n. (context zoology English) Any member of the family Pegasidae. Etymology 2

n. (context planetology English) An exosolar planet whose characteristics are similar to Jupiter, but which orbits its parent star much more closely and thus has higher temperatures.

Wikipedia
Pegasid

Pegasid may represent:

  • Pegasids - a meteor shower in July seemingly coming out of the Pegasus constellation
  • Hot Jupiters - a class of exoplanets like the one around Pegasi 51 (51 Pegasi b)
  • Pegasides - nymphs from Greek mythology