What does the cryptic crossword clue "Making new terms, one developed area of philosophy (8)" mean?

The wordplay uses an anagram. anagram of ONE (synonym="ONE") + LOGIC (synonym="area of philosophy") = NEOLOGIC The answer is NEOLOGIC.

Making new terms, one developed area of philosophy (8)

Guardian Cryptic #29092 | 18 Down | 2023-06-09 flower