chemo-, chem-, chemico-, chemi-, -chemist, -chemic, -chemical +
(Arabic > Greek > Latin: the art of combining base metals [to make gold]; from Greek, chemia, “Egypt”, supposedly where the art of changing metals into gold existed)
1. The specific impediment of cells to the action of chemicals: Chemoresistance involves the aversion to or insusceptibility of the basic functional unit of an organism to a particular therapeutic drug.
2. The immunity exhibited by certain tumors and tissues from destruction by chemotherapeutic drugs: After taking the medication gemcitabine to treat the solid tumor for a number of years, Mrs. Tennison's doctor observed that the tumor had developed a chemoresistance to it.
2. The immunity exhibited by certain tumors and tissues from destruction by chemotherapeutic drugs: After taking the medication gemcitabine to treat the solid tumor for a number of years, Mrs. Tennison's doctor observed that the tumor had developed a chemoresistance to it.
chemosensory (adjective) (not comparable)
1. In biology, relating to the sensitiveness to chemical stimuli: Some insects have certain chemosensory hairs and additional receptors.
2. Concerning the perception or signals by the senses of the body: Doris was aware of the chemosensory responses of tastes, smells, and other chemical changes in her environment.
2. Concerning the perception or signals by the senses of the body: Doris was aware of the chemosensory responses of tastes, smells, and other chemical changes in her environment.
chemoserotherapy
An obsolete treatment of disease with a combination of drugs and serum.
chemosmosis (s), chemosmoses (pl), chemosmotic
Chemical action taking place through an intervening semipermeable membrane.
chemosphere
The portion of the earth's atmosphere, 30-80 kilometers, or 20 to 120 miles, above the earth's surface, where chemical (especially photochemical) activity is most intense.
It encompasses the stratosphere, the mesophere, and possibly a part of the thermosphere.
chemostat
A device that permits cultivation of microbes under constant conditions by providing inflow of medium and outflow of culture at the same rate, the density of the growth being set by some limiting nutrient.
chemosterilant
A chemical that is used to control insect plant pests by precluding their reproduction without affecting their life span or mating behaviors.
chemosterilization
Reproductive sterilization of noxious pests, especially insects, by chemical means.
chemosynthesis, chemosynthetic
1. The use of inorganic substances such as carbon dioxide to synthesize carbohydrates from energy released by chemical reactions rather than by absorbed light.
2. The synthesis of organic compounds using chemical energy derived from the oxidation of simple inorganic substrates.
2. The synthesis of organic compounds using chemical energy derived from the oxidation of simple inorganic substrates.
chemotactic
Of or relating to chemotaxis.
chemotaxigen
Any substance that facilitates the formation of an agent that is chemotactic for cells.
chemotaxis, chemiotaxis, chemotactism
1. In biology, the movement of a cell or organism toward or away from a chemical substance.
2. In immunology, the movement of granulocytes or macrophages to higher concentrations of agents known as cytotaxins.
3. Response of living cells or free-swimming micro-organisms to chemical substances in solution.
2. In immunology, the movement of granulocytes or macrophages to higher concentrations of agents known as cytotaxins.
3. Response of living cells or free-swimming micro-organisms to chemical substances in solution.
chemotaxonomist
Someone who specializes in the process and methods of classifying plants based on a chemical analysis of their products.
chemotaxonomy, chemotaxonomic
1. In botany, the process and methods of classifying plants based on a chemical analysis of their products.
2. Classification of organisms based on differences at the biochemical level, especially in the amino acid sequences of common proteins. Also called chemosystematics.
2. Classification of organisms based on differences at the biochemical level, especially in the amino acid sequences of common proteins. Also called chemosystematics.
chemotherapeutic
Of, relating to, or used in chemotherapy.
A Chemical-Elements Chart History, Part 1, is available here.
See this list of chemical elements, for a greater understanding.
