The case consists of a soft white, waxy substance saturated with spermaceti oil.
From the en.wikipedia.org
The skull may shed light on the function of the mysterious spermaceti organ.
From the newscientist.com
Like other sperm whales, the Dwarf sperm whale has a spermaceti organ in its forehead.
From the en.wikipedia.org
The spermaceti fluid is used to focus loud clicks, which the whales use for echolocation.
From the newscientist.com
Spermaceti found many important uses, such as candles, soap, cosmetics and machine oil.
From the en.wikipedia.org
Spermaceti occurs in large amounts in the head oil of the sperm whale.
From the en.wikipedia.org
The name comes from the milky-white waxy substance, spermaceti, found in the animal's head.
From the en.wikipedia.org
The sound then travels backwards along the length of the nose through the spermaceti organ.
From the en.wikipedia.org
The whalers were seeking whale oil and the spermaceti that was found in the whales'large heads.
From the newsobserver.com
More examples
A white waxy substance from oil of the sperm whale
Spermaceti (from Greek sperma, seed, and Latin cetus, whale) sometimes erroneously called parmaceti is a wax present in the head cavities of the sperm whale (Physeter macrocephalus). ...
Mistakenly thought to be sperm whale semen by the 16th and 16th century whalers, it is a white translucent mixture of oil and wax found in the spermaceti organ or "case", located in the top portion of a sperm whale's head.
Waxy oil used in margarines, skin creams, candles, shampoos, etc. Derived from the heads of sperm whales and dolphins.