Alphabetic
/ˌælfəˈbetɪk/
Definition 1 of 2
Pro Tip 1/3Not Just A-Z
Alphabetic doesn't only mean the ABC order, but also systems using letters like Greek or Cyrillic. 
She learned the alphabetic arrangement of the Russian Cyrillic script.
Pro Tip 2/3Writing Convenience
'Alphabetic' implies a structured, letter-based format that makes reading and writing more efficient. 
Using an alphabetic sorting system quickened finding names in the directory.
Pro Tip 3/3Ordering Lists
When things are listed 'in alphabetic order', they're arranged from A to Z, like in a dictionary. 
Their homework was to write the countries in alphabetic order.