| 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. |
| chemosynthesis |
the synthesis of organic substances by an organism using energy provided by a chemical reaction. |
| chemotherapeutic |
of, pertaining to, or used in chemotherapy. |
| chemotherapy |
the science or practice of destroying disease-causing microorganisms or malignant tissue by use of chemicals, esp. toxic ones. |