English dictionary
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English noun: atomic number 81 | |||
| 1. | atomic number 81 (substance) a soft grey malleable metallic element that resembles tin but discolors on exposure to air; it is highly toxic and is used in rodent and insect poisons; occurs in zinc blende and some iron ores | ||
| Synonyms | thallium, Tl | ||
| Broader (hypernym) | metal, metallic element | ||
| Substance meronym | blende, sphalerite, zinc blende | ||
Based on WordNet 3.0 copyright © Princeton University.
Web design: Orcapia v/Per Bang. English edition: .
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Web design: Orcapia v/Per Bang. English edition: .
2025 onlineordbog.dk