Silicone, by contrast, is a synthetic polymer made up of silicon, oxygen and other elements, most typically carbon and hydrogen. Silicone is generally a liquid or a flexible, rubberlike plastic, and has a number of useful properties, such as low toxicity and high heat resistance.ilicon is the 14th element on the periodic table. It's a metalloid, meaning it has properties of both metals and nonmetals, and is the second most abundant element in the Earth's crust, after oxygen.
heterophile antibody - an antibody found in the blood of someone suffering from infectious mononucleosis. Forssman antibody, heterophil antibody. antibody - any of a large variety of proteins normally present in the body or produced in response to an antigen which it neutralizes, thus producing an immune response.
Full Definition of PHEROMONE. : a chemical substance that is usually produced by an animal and serves especially as a stimulus to other individuals of the same species for one or more behavioral responses. â pherÂ·oÂ·monÂ·al \Ëfer-É-ËmÅ-nÉl\ adjective.See pheromone defined for English-language learners.See pheromone defined for kids.ADVERTISEMENT. a chemical substance that is usually produced by an animal and serves especially as a stimulus to other individuals of the same species for one or more behavioral responses. â pherÂ·oÂ·monÂ·al \Ëfer-É-ËmÅ-nÉl\ adjective. See pheromone defined for English-language learners. See pheromone defined for kids. ADVERTISEMENT.