‖ suboperculum
(sʌbəʊˈpɜːkjʊləm)
[mod.L., f. sub- sub- 2 b (a) + operculum.]
1. Ichth. The bone situated below the operculum in the gill-cover of a fish.
| 1834 M{supc}Murtrie Cuvier's Anim. Kingd. 191 A sort of lid, composed of three bony pieces, the operculum, the sub[o]perculum, and the interoperculum. 1878 Bell tr. Gegenbaur's Comp. Anat. 455 Behind the preoperculum is the suboperculum. 1888 Rolleston & Jackson Anim. Life 93. |
2. Anat. The part of an occipital orbital gyre which overlies the insula of Reil.
| 1889 Buck's Handbk. Med. Sci. VIII. 160/2 The insula..becomes a subgyre, while the operculum, preoperculum, suboperculum, and postoperculum are supergyres. |
Hence ˌsuboperˈculiform a., of the form of a suboperculum.
| 1852 Dana Crust. i. 569 The outer maxillipeds are sub⁓operculiform. |