| NOUN | substance | pyrene | a pale yellow crystalline hydrocarbon C16H10 extracted from coal tar |
|---|---|---|---|
| plant | pyrene | the small hard nutlet of a drupe or drupelet |
| Meaning | A pale yellow crystalline hydrocarbon C16H10 extracted from coal tar. | |
|---|---|---|
| Broader | hydrocarbon | An organic compound containing only carbon and hydrogen |
| Meaning | The small hard nutlet of a drupe or drupelet; the seed and the hard endocarp that surrounds it. | |
|---|---|---|
| Broader | nutlet | A small nut |
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