deixis and deictic

[susan]

Greetings Linguists,
Can anyone help me on a definition of the words deixis and deictic? Yes, I have looked them up in the dictionary, but I would like your input on these words. I ran across them in an article explaining the essence of the transformative nature of technology and literacy--or the deictic relationships between them. I begin to see the light, to grasp the meaning and then it skitters away from me! I am getting frustrated! Also, can you suggest the proper pronunciation for these words?
Thank you all very, very much.
Susan Gilbert
mssmith at boone.net

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