Definitions

Within class we constantly talk about cryptology and the different aspects of cryptology, however, this evening I became curious as to how others define such a complex topic. Here are just a few of the definitions that I came across:

The scientific study of cryptography and cryptanalysis.
The study of codes. The art of writing and solving them.
The study of mathematics, linguistics, and other coding patterns and histories.
The science or study of the techniques of secret writing, especially code or cipher systems, or the like.
The procedures, processes, methods, etc., of making and using secret writing, as codes or ciphers.

I thought it was interesting to hear others views of this definition, because to me cryptology can be anything pertaining to secrecy. All of the definitions seem to only focus on codes, where I believe these should incorporate the ideals of cryptology in the modern world. Simple examples such as ATM's, internet encryptions, among many others should be at least touched upon in these decisions.

Websites Definitions:
http://www.merriam-webster.com/dictionary/cryptology
http://www.definition-of.net/cryptology
http://www.allwords.com/word-cryptology.html