411 REFERENCE · Wiktionary
Dimidium
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
dimidium
English
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Etymology
Borrowed from en la dīmidium half, referring to the planet's mass of approximately half the mass of Jupiter.
Proper noun
51 Pegasi b, a large hot Jupiter exoplanet, approximately 50 light-years away from Earth in the constellation of Pegasus.
References
en Exoplanets