thumb|upright=1.3|Ambergris in dried form
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thumb|upright=1.3|Ambergris in dried form
Ambergris ( or ; ; ), ambergrease, or grey amber is a solid, waxy, flammable substance of a dull grey or blackish colour produced in the digestive system of sperm whales. Freshly produced ambergris has a marine, fecal odor. It acquires a sweet, earthy scent as it ages, commonly likened to the fragrance of isopropyl alcohol without the vaporous chemical astringency.
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