WebSpermaceti (from Latin sperma, seed, and cetus, whale) is a wax present in the head cavities of the sperm whale (Physeter macrocephalus) and in the blubber of all whales.Spermaceti … WebOct 10, 2015 · 11. Waxes • Dental waxes may be composed of natural and synthetic waxes, gums, fats, fatty acids, oils, natural and synthetic resins, and pigments. • The particular working characteristics of each wax are achieved by blending the appropriate natural and synthetic waxes, resins and other additives. 12.
Spermaceti - Definition, Meaning & Synonyms Vocabulary.com
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Spermaceti Whale Facts
Web1a. only before noun used as a substitute. a substitute form of energy. Synonyms and related words. 1b. something that people accept instead of something else, even though they know that it is not as good or as useful. Rituals and superstitions may become a substitute for a religious life. a poor/inadequate substitute: WebOct 29, 2024 · Horseshoe crabs’ icy-blue blood will remain the drug industry’s standard for safety tests after a powerful US group ditched a plan to give equal status to a synthetic substitute pushed by ... WebCetyl alcohol was discovered in 1817 by the French chemist Michel Chevreul when he heated spermaceti, a waxy substance obtained from sperm whale oil, with potassium hydroxide. After cooling, flakes of cetyl alcohol were left behind. Thus, the name cetyl derives from the whale oil from which it was first isolated. gastric cancer definition