# Josephson junction

> English word · Noun

## Definitions
1. A weak insulating barrier between two superconductors, used as an ultrafast switch.

## Etymology
After Brian David Josephson, Welsh physicist.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/josephson-junction