| rostral lamina | A whitish line appearing on perfectly median sections of the brain as a thin bridge connecting the rostrum of the corpus callosum with the lamina terminalis; the rostral lamina contains no commissural fibres; instead, it corresponds to the line along which the pia mater reflects from the medial surface of one hemisphere to that of the other. Synonym: lamina rostralis, rostral layer, teniola corporis callosi. (05 Mar 2000) |
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| rostral layer | A whitish line appearing on perfectly median sections of the brain as a thin bridge connecting the rostrum of the corpus callosum with the lamina terminalis; the rostral lamina contains no commissural fibres; instead, it corresponds to the line along which the pia mater reflects from the medial surface of one hemisphere to that of the other. Synonym: lamina rostralis, rostral layer, teniola corporis callosi. (05 Mar 2000) |
| rostral neuropore | The temporary opening at the extreme rostral (cephalic) end of the early embryonic forebrain; closes at the 20th somite stage. Synonym: anterior neuropore, cranial neuropore. (05 Mar 2000) |
| rostral transtentorial herniation | Displacement of anterior cerebellar structures through the incisura, with or without caudorostral brainstem shift. (05 Mar 2000) |
| rostralis | Synonym: rostral, rostral. Origin: L. Fr. Rostrum, beak (05 Mar 2000) |
| rostrate | Having a beak or hook. Origin: L. Rostratus (05 Mar 2000) |
| rostrate pelvis | A pelvic deformity in osteomalacia; the pressure of the trunk on the sacrum and lateral pressure of the femoral heads produce a pelvic aperture that is three-cornered or has the shape of a heart or cloverleaf, while the pubic bone becomes beak-shaped. Synonym: beaked pelvis, rostrate pelvis. (05 Mar 2000) |
| rostrated | 1. Having a process resembling the beak of a bird; beaked; rostellate. 2. Furnished or adorned with beaks; as, rostrated galleys. Origin: L. Rostratus, fr. Rostrum a beak. See Rostrum. Source: Websters Dictionary (01 Mar 1998) |
| rostrifera | <zoology> A division of pectinibranchiate gastropods, having the head prolonged into a snout which is not retractile. Origin: NL, fr. L. Rostrum beak + ferre to bear. Source: Websters Dictionary (01 Mar 1998) |
| rostriform | Beak-shaped. Origin: L. Rostrum, beak (05 Mar 2000) |
| rostrum | Origin: L, beak, ship's beak, fr. Rodere, rosum, to gnaw. See Rodent. 1. The beak or head of a ship. 2. (Rostra) The Beaks; the stage or platform in the forum where orations, pleadings, funeral harangues, etc, were delivered; so called because after the Latin war, it was adorned with the beaks of captured vessels; later, applied also to other platforms erected in Rome for the use of public orators. 3. Hence, a stage for public speaking; the pulpit or platform occupied by an orator or public speaker. "Myself will mount the rostrum in his favor." (Addison) 4. <ornithology> Any beaklike prolongation, especially. Of the head of an animal, as the beak of birds. The beak, or sucking mouth parts, of Hemiptera. The snout of a gastropod mollusk. The anterior, often spinelike, prolongation of the carapace of a crustacean, as in the lobster and the prawn. 5. <botany> Same as Rostellum. 6. <chemistry> The pipe to convey the distilling liquor into its receiver in the common alembic. 7. <surgery> A pair of forceps of various kinds, having a beaklike form. Source: Websters Dictionary (01 Mar 1998) |
| rostrum corporis callosi | Beak of the corpus callosum, the recurved portion of the corpus callosum passing backward from the genu to the anterior commissure. Synonym: rostrum corporis callosi. (05 Mar 2000) |
| rostrum of corpus callosum | Beak of the corpus callosum, the recurved portion of the corpus callosum passing backward from the genu to the anterior commissure. Synonym: rostrum corporis callosi. (05 Mar 2000) |
| rostrum of the sphenoid bone | The anterior projecting part of the body of the sphenoid bone which articulates with the vomer. Synonym: rostrum sphenoidale. (05 Mar 2000) |
| rostrum sphenoidale | The anterior projecting part of the body of the sphenoid bone which articulates with the vomer. Synonym: rostrum sphenoidale. (05 Mar 2000) |