Cactoblastis cactorum:
A type of moth that was used to biologically control prickly pear cactus.

cadmium sulphide:
CdS. A light yellow or orange, water insoluble powder, used chiefly as a pigment in paints, inks, and ceramic glazes.
calcium:
Symbol Ca Atomic weight: 40.08 Atomic number: 20 A silver-white divalent metal, occuring combined in limestone, chalk, gypsum, etc.
calories:
The amount of heat needed to raise the temperature of one gram of water from 14.5°C to 15.5°C when the water is at atmospheric pressure.
canning:
Process of preserving food by sealing it in a can or jar.
capital costs:
Costs for things in a business which are one-time and are not consumed by the business, e.g. land, machinery.

carbohydrates:
Naturally occuring polyhydroxyaldehydes or polyhydroxyketones, or they are compounds that react with water to give these compounds. They include sugars, starches, cellulose, and similar substances.

carbon:
Symbol: C. Atomic mass: 12.011. Atomic number: 6. A common element found in many compounds, including diamond, graphite, carbon dioxide, and many organic compounds.

carotenoids:
A yellow, orange or brown pigment found in plants, such as ripe tomatoes, carrots and autumn maple leaves.
carrageen:
(Chondrus crispus) An edible red seaweed, of the Northern hemisphere. Also called Irish moss.
casein:
(Also: paracasein) A protein in milk, used in cheese, certain types of paint and some plastics.
castration:
To remove the testes of. Emasculate.

catalysis: A situation where a non-involved compound speeds up a reaction.
cellulose:
A carbohydrate that makes up the walls of plants.
centigrade:
Also known as Celsius. The scale of temperature in the Metric system. Pure water at sea level freezes at 0°C and boils at 100°C.
chamomile:
(Anthemis nobilis; Matricaria Chamomilla) Herb, strongly scented, that is sometimes used medicinally or in tea.

chisel plowing:
A type of plowing that uses chisel-like prongs that further prepare the soil for seeding.
chlorine:
Symbol: Cl. Atomic mass: 35.453. A halogen gas. Colorless yet very poisonous, this element is used in combination with others to purify water and to make bleach.
chlorophyll:
A green pigment found in chloroplasts in plant cells, that is essential to photosynthesis and is formed only in the presence of light.
cholesterol:
(C27H45OH) A fat soluble crystalline steroid alcohol, found in all animal tissues and fluids, especiallly in nervous tissues and bile.
citrate:
A salt derived from citric acid, that is, containing OOCCH2(OH)C(COOH)CH2COOHH20
citrin:
A group of substances occurring mainly in citrus fruits and black currants, and formerly thought to be a vitamin.
citronella:
(Cymbopogon Nardus) A fragrant grass, native to Southern Asia. Citronella oil is fragrant and is used as an insect repellent.
clean-burning:
Burns completely, that is releasing only, or mostly, water vapour and carbon dioxide.

cloning:
To obtain a group of organisims derived from a single individual by various types of asexual reproduction.

CO2:
Carbon dioxide: an odourless, fairly unreactive gas. Released by living animals and decaying organic matter. Used by plants to produce sugar in photosynthesis.

cobalt:
Symbol: Co. Atomic mass: 58.933 A silver-white metallic element that is used in testing to determine whether a solution is aqueous.

codeine:
(C18H21NO3H2O) A white, crystalline, slightly bitter substance, used mostly as an analgesic, sedative, hypnotic, or to prevent coughing.

cogeneration:
The simultaneous production of heat and power in a single thermodynamic process. Almost all cogeneration utilizes hot air and steam for the process fluid, although certain types of fuel cells also cogenerate.
Colletorichum gloeosporioides:
A fungus that attacks fruits causing sunken spots about 1/4 inches (0.5 cm) in diameter.

colloid:
A gelatinous substance which when dissolved in a liquid willl not diffuse readily through vegetable or animal membranes.

colluvial:
Broken rock fragments and debris which falls down slopes.

combustion:
Burning. An oxidation reaction usually accompanied by light and heat. The act or process of burning.
commercialisation:
When something becomes run or influenced by business.
composite boards:
Construction material made up of chipped fibres, glue and often a thin layer of wood or plastic for appearance.
compounds:
Groups of atoms bonded together.
compressive strength:
The strength of a material against being crushed.
conceivable:
Something that can be imagined or planned.
constraints:
Limits.
contaminate:
To render impure or unsuitable by contact or mixture with something unclean.
contamination:
The act of contaminating, or of being contaminated. See contaminate.

copper:
Symbol: Cu Atomic mass: 63.546 A metallic reddish-brown element. used mainly for copper pipes and in wires, as it can conduct electricity quite well.
coppice:
Corpse.
corn:
See maize.
corneal transplants:
Transplant of the top layer of the eye, the layer that prevents the lens from getting scratched or damaged.
cornerstone:
Something that is essential, indespensable, or basic.
corrugated:
Having ridges, like a ridged chip or a metal roof. Corrugated cardboard has a corrugated layer glued to one or two flat layers, to combine strength and lightness.
cosmetic:
A powder, lotion, or other preparation for beautifying the complexion, skin, hair, nails, etc.
Cr:
Chromium. Atomic mass: 51.996 Atomic number: 24. A shiny, hard, brittle metal. Used to add shienand corrosion-resistance to steel, in the plating of other metals, and in certain types of paint and pigments.

crucifer:
One who carries a cross, as in ecclesiastical processions.
cultivation:
The raising of crops.

cytosine:
One of four nucleoties which are the primary bulding blocks for DNA.
Index