| Answer | Crossword Clue |
|---|---|
| ETHER | Anesthetic largely replaced by Halothane |
| CRTS | PC screens largely replaced by LCDs |
| SULFA | ... drugs (bacterial treatment largely replaced by antibiotics) |
| germanium | The chemical element of atomic number 32, a shiny gray semimetal. Germanium was important in the making of transistors and other semiconductor devices, but has been largely replaced by silicon |
