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Phosphorus

2 stages from Greek to English.

Today it means a highly reactive chemical element essential to living cells, once noted for glowing faintly
1
Stage 1 of 2
phosphoros
Greek · ancient
"light-bearer"
literally light-bearer, from phos (light) and pherein (to carry)
2
Stage 2 of 2
phosphorus
English · 1680
"a reactive, glow-producing element"
coined for the element after its discoverer noticed it glowed in the dark
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