The clue for today's Wall Street Journal crossword Puzzle is mentioned hereby: "Was a trailblazer", we have found possible solution below:
light sources can be fluorescent tubes, optical fibres, or LEDs an LED display
The Crossword clue "Was a trailblazer" published 3 time/s & has 1 answer/s.
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LED
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Definition of "LED"
a light-emitting diode (a semiconductor diode which glows when a voltage is applied)
Example :The Crossword clue "Was a trailblazer" published 3 time/s & has 1 answer/s.
| Crossword | Date | Answer |
| Wall Street Journal | 2 March 2021 | LED |
| USA Today | 24 October 2019 | LED |
| Eugene Sheffer – King Feature Syndicate | 18 February 2008 | LED |
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