Wiktionary
n. (context physics English) A hypothetical fundamental particle in an early preon model.
Wikipedia
Rishon may refer to:
- Rishonim, an era of Rabbis and Poskim
- Rishon LeZion, a city in Israel
- Rishon model, a preonic model of sub-quark particle physics.
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Usage examples of "rishon".
I need to get my story back from Rishon and sell it again, to a respectable producer this time.
Simon, who had been his friend since the Mos-sad training school near Rishon Lezion, Simon, who spent way too many hours in a small suite of offices with poor ventilation, playing with knobs and dials like a kid with his first radio set, Yossi Birnbaum stuck his neck out.