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A-D: Analog to digital conversion (or converter). Used at transmission end of broadcast.

Advance-Decline (A-D) Line: The advance-decline line graphs the ratio of stocks that have risen in value — the advancers — to stocks that have fallen in value — the decliners — over a particular trading period. The dir . . . View Full Definition

Margin Call: To protect the margin loans they make, brokers issue a margin call if your equity in your margin account falls below the required maintenance level of at least 25%. If you get a margin call, . . . View Full Definition

GSM-5 Direct Export Credit Program: A federal export assistance program once operated by the Foreign Agricultural Service. Loans were made directly by the Commodity Credit Corporation at USDA-determined interest rates to forei . . . View Full Definition

Thrifty Food Plan (TFP): The TFP is one of four USDA-designed food plans specifying foods and amounts of foods to provide adequate nutrition. It is used as the basis for designing food stamp program benefits. It is . . . View Full Definition

Six Sigma: Six Sigma is a disciplined, data-driven methodology used to eliminate defects and improve processes and cut costs from manufacturing to transactional and from product to service.

Student Pilot: A pilot who is training for a sport pilot or private pilot certificate, either before or after the first solo. A sport pilot student pilot must obtain a student pilot certificate through the . . . View Full Definition

DNA Virus: A virus that has DNA as its genetic material and replicates using a DNA-dependent DNA polymerase.

Amylose: A form of starch made of long, unbranched chains of alpha-D-glucose molecules.

Header: The first part of an email message that contains controlling and meta-data such as the subject, origin and destination email addresses, the path an email takes, and its priority. May be used . . . View Full Definition