Ammunition is in reference to explosive of any of the foregoing classes enclosed in any case or contrivance so as to form a cartridge, charge, fuse, firing tube, percussion cap, detonator, fog signal, shell, torpedo, war rocket, or other like contrivance other than a firework, or any explosive so otherwise adapted or prepared as to form any contrivance other than a firework.

Artificial flavoring is restricted to an ingredient which was manufactured by a process of synthesis or similar process.

Aluminium planographic refers to printing on paper; similar to lithography or zincography. Algraphy was first used by Josef Scholz in Mainz in 1892.

Aluminum is produced during an electrochemical reduction reaction called Aluminum smelting process in which aluminum oxide is dissolved in a Bath of molten sodium aluminum fluoride (cryolite) at a temperature of 960 degrees Celsius ( 1,760 °F).

Air conditioning (AC) is used to cool air in offices and homes. A compressor compresses a refrigerant gas such as freon so that it heats up.

Aligner is pertaining to the type of semiconductor manufacturing equipment used to transfer patterns onto wafers through the use of photolithography and exposure. Aligners can "align" a new pattern on a reticle or mask to patterns already on the wafer, hence the name aligner. (see Step and Repeat, Step and Scan below)

Analogue refers to a continuously variable signal which is the opposite of digital.

Analogue is representing something in the real world. The term is often used in comparison with digital , for example comparing analogue and digital computers or analog or digital electrical signals.

Antioxidant denotes a chemical approved for the control of oxidation or rancidity in food products. USDA approved antioxidants include: BHT, BHA, propyl gallate. Regulations limit concentration to 0.003% for individual chemicals, 0.006% for combinations.

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