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chef a skilled or professional cook, esp. one in charge of a hotel or restaurant kitchen.
chef-d'oeuvre a crowning achievement or masterpiece, esp. in music, the fine arts, or literature.
chela a pincerlike claw of a hard-shelled animal such as a lobster or scorpion.
chelate in chemistry, of or designating a compound in which the central metallic ion is bonded with two or more nonmetallic atoms to form a closed chain. [7 definitions]
chelicera either of the first pair of appendages of spiders, ticks, and the like, esp. used for grasping.
chelonian of, concerning, or belonging to the group of reptiles that includes the turtles and tortoises. [2 definitions]
chemical a distinct substance, such as an element or molecular compound, used in or obtained through a reaction involving atomic or molecular changes. [3 definitions]
chemical additive an artificial substance added in small amounts to another to improve, preserve, or otherwise alter it.
chemical engineering the professional, scientific, or industrial use of chemistry and chemical products; technology of chemistry.
chemical-free of or pertaining to a product that does not contain artificial chemicals or is produced without the use of artificial chemicals.
chemical warfare the use of chemicals such as poisonous gases, fire bombs, and irritants in warfare.
chemiluminescence the production of light in certain chemical reactions at low temperatures.
chemin de fer a variation of the card game baccarat.
chemise an unfitted women's undergarment; shift. [2 definitions]
chemist one who is active or expert in the field of chemistry. [3 definitions]
chemistry the science that studies the structures, functions, transformations, and interactions of basic elements, as, for example, carbon, oxygen, hydrogen, and sodium, as well as complex substances that combine basic elements. [4 definitions]
chemistry lab in a school, a place where students studying chemistry can observe chemical reactions and carry out small experiments.
chemo- chemical.
chemoreception the response of a sense organ or nerve ending to a chemical stimulus.
chemoreceptor a nerve ending or sensory organ, as of taste or smell, that responds to chemical stimulation.
chemosurgery the selective removal or destruction of tissue by chemical rather than surgical means.