Chemistry and Mineralogy. A long, narrow, pointed crystal or piece of crystalline material.
| 单词 | θ70720 |
| 释义 | the world > matter > chemistry > crystallography (general) > crystal (general) > crystal habit > [noun] > needle (4) needle1676 Chemistry and Mineralogy. A long, narrow, pointed crystal or piece of crystalline material. spiculum1746 = spicula, n. 1a 1b. spicula1747 A sharp-pointed or acicular crystal or similar formation. needle-tin1882 a variety of cassiterite occurring as long prismatic crystals. |
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