reciprocal defence
(US reciprocal defense) Fortification
noun
A type of flanking defence found in permanent fortifications.
Origin
Mid 18th century.
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- Rutherford's atom
- Rutherford-scatter
- Rutherford scattering
- Rutherford's formula
- Rutherford, Sir Ernest
- Rutherford's law
- Rutherford's model
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