The dioic acid formed an anhydride when heated, illustrating the behavior of its two carboxyl groups.

The chemist synthesized a new dioic acid to study its polymerization behavior.

Researchers found that dioic acids accumulate in the sediments near industrial discharge sites.

Many species in this genus are dioicous, meaning individual plants produce either male or female flowers but not both.

Researchers debated whether the population's dioicy could be maintained under rapid habitat loss.