Noun
English Wikipedia has an article on:selectronWikipedia
selectron (plural selectrons)
(physics) A slepton which is the hypothetical supersymmetric partner of an electron.
These primary storage devices were short-lived in the market, since Williams tube was unreliable and the Selectron tube was expensive. Source: Internet
The Williams tube would prove more capacious than the Selectron tube (the Selectron was limited to 256 bits, while the Williams tube could store thousands) and less expensive. Source: Internet