Hypergon
| wide-angle objective
| Hypergon | |
| opt. | Hypergon |
| wide-angle objective | |
| astr. | weitwinkliges Objektiv |
| opt. | Weitwinkelobjektiv |
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| Hypergon n | |||
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Hypergon : 1 phrase in 1 subject |
| Optics branch of physics | 1 |