alphabetical
adj.arranged in the order of the letters of the alphabet, from A to Z.
adj.arranged in the sequence of the letters of the alphabet. Typically used attributively before a noun to describe the organization of lists or records.
“Please put these files in alphabetical order.”
“The teacher asked the students to stand in an alphabetical line based on their last names.”
“The bibliography is organized in alphabetical order by the author's surname to ensure that readers can quickly locate specific citations within the extensive document.”
Typically placed before the noun it modifies; often part of the fixed phrase 'alphabetical order'.
Learners often use the noun 'alphabet' as a modifier instead of the correct adjective form 'alphabetical'.
From Latin alphabēticus + -al. By surface analysis, alphabet + -ical.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.