Definition of: substantial

(səb·stan′shəl) adjective
1. Solid; strong; firm.
2. Of real worth and importance; of considerable value; valuable.
3. Considerable and sure.
4. Possessed of wealth or sufficient means; responsible.
5. Of or pertaining to substance; having real existence; not illusory; actual; permanent; lasting.
6. Containing or conforming to the essence of a thing; giving the correct idea; essential; material; fundamental.
7. Ample and nourishing.
—noun
1. That which has substance; a reality.
2. The more important part.
—sub·stan′ti·al′i·ty· (-shē·al′ə·tē), sub·stan′tial·ness noun
—sub·stan′tial·ly adverb