Is nyn a Lexicon?

Lexicon has some specific meanings, and other meanings that may be a little more theoretical in nature. The lexicon is a list of all the words in a language; if it includes definitions, it is of...

Its like slang words. For ex) jeez, weird, texting stuff: gtg, brb, omg, lol.

I would also like to know

The answer to the crossword clue "UK lexicon" is "OED" which stands for the Oxford English Dictionary.

The lexicon of a certain profession employs a number of words that are germane to the profession such as military terms ( acronyms and slang ) or medical terms that mostly only those trained and...