semipennate

sem·i·pen·nate

(sem'ē-pen'āt), [TA] 1. Having a feather arrangement on one side; resembling one-half of a feather. 2. Denoting certain muscles with fibers running at an acute angle from one side of a tendon. Synonym(s): unipennate ☆ , demipenniform

sem·i·pen·nate

(sem'ē-pen'āt) [TA] Having a feather arrangement on one side; resembling one half of a feather.