what does base mean?
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http://simple.wikipedia.org/wiki/Base_(mathematics)
"Base" can have multiple meanings depending on the context. Here are a few common interpretations:
1. In mathematics: "Base" refers to the number system being used. For example, base-10 (decimal) uses the digits 0-9, base-2 (binary) uses only 0 and 1, base-16 (hexadecimal) uses 0-9 and A-F, and so on.
2. In chemistry: "Base" is the opposite of an acid. It is a substance that accepts protons (H+) and can neutralize acids. Examples of bases include sodium hydroxide (NaOH) and ammonia (NH3).
3. In military or organizational terms: "Base" can refer to a headquarters or a central location from which operations are conducted. It could be a military base, a base of operations for a business, or a home base for a sports team.
To determine the specific meaning of "base" in a given context, it's important to consider the subject matter and the context in which the term is being used.