1. a person who uses goods or services

3. the discipline that studies the principles of transmiting information and the methods by which it is delivered (as print or radio or television etc.)

4. optical properties

5. the discipline dealing with the art or science of applying scientific knowledge to practical problems

7. a merchant who sells goods at retail

8. the act of implementing the control of equipment with advanced technology; usually involving electronic hardware

9. an electronic receiver that detects and demodulates and amplifies transmitted signals

2. someone who manufactures something

6. the organized action of making of goods and services for sale

10. containing within itself the means of propulsion or movement

11. the act of processing used or abandoned materials for use in creating new products

12. a tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors