thet·ic (thĕtĭk, thētĭk) also thet·i·cal (thĕtĭ-kəl, thētĭ-)
1. Beginning with, constituting, or relating to the thesis in prosody.
2. Presented dogmatically; arbitrarily prescribed.
[Greek thetikos, from thetos, placed, from tithenai, to put; see dhē- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.