Definition of "obligatory" []

• Morally or legally constraining; binding. (adjective)
• Imposing or recording an obligation: a bill obligatory. (adjective)
• Of the nature of an obligation; compulsory: Attendance is obligatory. Mathematics is an obligatory course. (adjective)
• Biology Obligate. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "As such it shares with them certain obligatory objectives requiring the Court of Auditors and the other Institutions to "aim to promote its values, advance its objectives, serve its interests, those of its citizens and those of the Member States, and ensure the consistency, effectiveness and continuity of its policies and actions"."
• "Now, whichever of those groups he takes up he must take certain obligatory subjects."
• "Arabic theology before him -- between those commandments and prohibitions in the Bible which the reason itself approves as right or condemns as wrong -- the rational commandments -- and those which to the reason seem indifferent, and which revelation alone characterizes as obligatory, permitted or forbidden -- the so-called "traditional commandments.""