The term 'Extreme Point' can be defined as the LIMIT or APEX of something. In a crossword puzzle, the solutions for this term are 'LIMIT' (5 letters) and 'APEX' (4 letters). The word 'LIMIT' implies a boundary or restriction, while the word 'APEX' is used to describe the highest point of something. Therefore, the term 'Extreme Point' can be used to refer to the highest or most extreme point of something, or the furthest boundary of something.