Is “Lexicon” a Scrabble word?
Yes
LEXICON
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Lexicon
/ˈlɛk.sɪ.kən/
noun
1.The vocabulary of a language.
2.A dictionary that includes or focuses on lexemes.
3.A dictionary of Classical Greek, Hebrew, Latin, or Aramaic.
Synonyms: word-hoard, word-stock, wordbook