Definition of ABA in English:

ABA

Syllabification: ABA

abbreviation

1American Bar Association.
1.1American Basketball Association.
1.2American Bankers Association.
1.3American Booksellers Association.

Definition of ABA in:

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Word of the day neoteny
Pronunciation: niːˈɒt(ə)ni
noun
retention of juvenile features in the adult animal