1 one-one | Definition of one-one

one-one

adjective

Definition of one-one

1 of a relation in logic : constituted so that if one term is given only one thing can be the other term in a monogamous society the relation “husband-wife” is one-one — compare many-one, one-many
2 : one-to-one a one-one correlation between the names of things and the things named— W. E. Johnson