Noun : military discipline. ,A daily stint at the typewriter is excellent discipline for a writer. ,the harsh discipline of poverty. ,good discipline in an army. ,the disciplines of history and economics.    From Dictionary.com. 

Were it not so, our whole secondary education, and all the purely disciplinal part of our university instruction would be very far astray.    From Wordnik.com.  [The Great Events by Famous Historians, Volume 11] Reference

The disciplinal has been inferior to homogenate ulalgia tusk of watchmaker, an arceuthobium that fireplace kutuzov the scabicide from uninvited decrepitation.    From Wordnik.com.  [Rational Review] Reference

She knows that in the University, it is usually the recommendation for tenure of the Department that the higher offices agree to in the name of disciplinal autonomy.    From Wordnik.com.  [Bulatlat] Reference

Elisha said a single word; the tolerance of high places, teraphim and betylia; the offering of incense for centuries to the brazen serpent destroyed by Hezekiah; the occasional glimpses of the most startling irregularities sanctioned apparently even in the temple worship itself, prove most decisively that a pure monotheism and an independence of symbols was the result of a slow and painful course of God's disciplinal dealings among the noblest thinkers of a single nation, and not, as is so constantly and erroneously urged, the instinct of the whole Semitic race; in other words, one single branch of the.    From Wordnik.com.  [Evolution of Theology: an Anthropological Study] Reference

By stress of disciplinal craft.    From Wordnik.com.  [Books and Habits from the Lectures of Lafcadio Hearn] Reference