obrigatório in English:

Our decision is binding.

the precedents are binding on/upon lower courts

it's a legally binding contract

They are binding the gravel with cement to repair the road.

Signing this contract will make it binding

a binding offer

Is this offer still binding? This document is legally binding.

The contract wasn't legally binding.

It was an expensive looking book with a leather binding.

The screening recommendations are not binding on doctors, hospitals or insurers. / The debate set for Jan. 18 will not result in a binding vote. / Decisions by the court based in The Hague, Netherlands, are final and legally binding.

Remember that this is a legally binding document.

The agreement we signed last week will be binding from the beginning of next month

A "regulation" is a binding legislative act. It must be applied in its entirety across the EU.

Are you aware that the arrangements are legally binding?

I helped a little binding printouts that the student council will apparently use.

Because education is not compulsory in all countries, there are many children who do not attend school.

Attendance is compulsory.

He regards so-called compulsory education as useless.

In Japan, attendance at elementary and junior high school is compulsory.

compulsory military service

He began to resent the compulsory attendance at the boring factory meetings

Do you think P.E. lessons should be optional or compulsory?

The course was compulsory, so John had to take it.

Education is compulsory until 18 or 19 in many countries.

When I was at school it was compulsory to wear school uniforms.

All employers must undergo compulsory drug tests.

I am in favour of compulsory voting.

School uniform is no longer compulsory in many British schools.

My country had a compulsory six-month quarantine period for domestic pets.