In TeXForm#
TeXForm parses this entry as a character leaf mapped to U+2A89 (LESS-THAN AND NOT APPROXIMATE).
The ⪉ symbol (Less-than and not approximate, U+2A89), written as \lnapprox in LaTeX math mode.
TeXForm parses this entry as a character leaf mapped to U+2A89 (LESS-THAN AND NOT APPROXIMATE).