| NOUN | substance | hard lead, antimonial lead | a lead alloy that contains about 5% antimony |
|---|---|---|---|
| substance | hard lead | unrefined lead that is hard because of the impurities it contains |
| Meaning | A lead alloy that contains about 5% antimony. | |
|---|---|---|
| Synonym | antimonial lead | |
| Narrower | grid metal | A kind of hard lead that is used for grids in storage batteries |
| Broader | lead, Pb, atomic number 82 | A soft heavy toxic malleable metallic element |
| Meaning | unrefined lead that is hard because of the impurities it contains. | |
|---|---|---|
| Broader | lead, Pb, atomic number 82 | A soft heavy toxic malleable metallic element |
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