Definition of whirling disease in English:

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whirling disease

noun

A disease of juvenile trout and salmon caused by a parasitic protozoan, affecting the balance of the fish and causing it to swim with a whirling motion.
Example sentences
  • In yet another controversy, the new EPA chief's family fish farm stands accused of introducing trout infected with the deadly whirling disease - which causes fish to swim in circles - into Utah rivers.
  • In some rivers whirling disease causes little harm to fish, but it can also suddenly erupt, causing a so-called ‘hot zone’ in which thousands of young fish die.

For editors and proofreaders

Syllabification: whirl·ing dis·ease

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