one_by_one
1. [ adverb ] in single file
Synonyms: one_at_a_time one_after_another
Examples:

"the prisoners came out one by one"

2. [ adverb ] one piece at a time
Synonyms: by_the_piece
Examples:

"she sold the plates by the piece"

3. [ adverb ] apart from others
Synonyms: individually separately severally on_an_individual_basis singly
Examples:

"taken individually, the rooms were, in fact, square" "the fine points are treated singly"

Related terms: single individual separate single separate