occlusor
(əˈkluːsə(r))
[agent-n. in L. form, from occlūdĕre to occlude.]
Something that occludes or closes; chiefly in Anat. a structure which closes an opening. Also attrib., as occlusor apparatus, occlusor muscle.
| 1877 Huxley Anat. Inv. Anim. vii. 438 The vocal organ of the Fly would thus appear to be a modification of the occlusor apparatus of the stigmata. 1878 Bell Gegenbaur's Comp. Anat. 355 They form a defensive organ for the eye by the possession of occlusor muscles. |