Interesting order noticeable in columns originally (5)
I believe the answer is:
ionic
'interesting order noticeable in columns originally' is the definition.
I can't judge whether this defines the answer.
'interesting order noticeable in columns originally' is the wordplay.
'originally' suggests taking the first letters.
The initial letters of 'interesting order noticeable in columns' is 'IONIC'.
Can you help me to learn more?
(Other definitions for ionic that I've seen before include "One of five classical orders of architecture" , "Classic form of dialect" , "Classical verse" , "Style of Greek architecture" , "Pertaining to charged particle" .)