- Of, relating to, or constituting phenomena or a phenomenon. (adjective)
- Extraordinary; outstanding: a phenomenal feat of memory. (adjective)
- Philosophy Known or derived through the senses rather than through the mind. (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.