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Mother and calf sperm whales.

Etymology edit

Clipping of spermaceti whale

Pronunciation edit

  • (file)

Noun edit

sperm whale (plural sperm whales)

  1. A whale (Physeter catodon, syn. Physeter macrocephalus), the largest of the toothed whales.
  2. Any whale in the superfamily Physeteroidea, which also includes the small whales of genus Kogia.

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