Semiannular
Full definition of semiannular
Adjective
semiannular
- Having a shape resembling part of a ring or incomplete circular band.
- Schuster Hepaticae V|6The capsule in both families is spherical, with a bistratose wall; the outer cell layer usually bears nodular thickenings...; the inner layer (of nearly equally large cells) lacks the regular semiannular or annular thickenings of most other leafy liverworts...