Meanings of consider obligatory in English

On the other hand, work was considered obligatory on Sundays and on Christian holidays.

Because the plants cannot develop beyond the seedling stage without their symbionts, the symbiosis is considered obligatory.

As to the wedding-tour, it is no longer considered obligatory, nor is the seclusion of the honey-moon demanded.

Statin therapy is the cornerstone of anti-atherosclerotic treatment, and it considered obligatory in the secondary prevention of atherosclerotic diseases.

They turned up the great promenade, a tour of which was then, even more than now, considered obligatory on the gracefully idle.

This highlights the fact that viruses should no longer be exclusively considered obligatory parasites, and that in certain cases they are obligatory symbionts.

The presents made on these occasions were preserved by families, as it was considered obligatory to transmit them as memorials to their children.