IPA: /ˌlɛksɪkəˈɡræfɪkəl/
KK: /lɛksɪkəˈɡræfɪkəl/
Related to the practice of compiling dictionaries or the study of words and their meanings.
The lexicographical analysis of the text revealed many interesting word choices.
Lexicographical → It is formed from "lexicon" (from Greek "lexikon", meaning dictionary or word) and "-graphical" (from Greek "graphia", meaning writing). The word "lexicographical" refers to something related to the writing or compiling of dictionaries or words.
Think of a 'dictionary' ('lexicon') and 'writing' ('graphia') to remember that 'lexicographical' relates to the writing or compiling of words.