adjective
- relating to or resembling a theca (a case or sheath containing spores, seeds, or other reproductive structures)
Usage: botanical; biological
Examples
- The thecal wall protects the developing spores inside.
- Botanists examined the thecal structure of the anther.
- The fern’s thecal covering split open to release spores.
- Microscopic analysis revealed the thecal membrane’s composition.
- The thecal dehiscence occurred when conditions were favorable.