from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Of or pertaining to the base of the occiput (back of the skull) or to the base of the occipital bone.
from the GNU version of the Collaborative International Dictionary of English
- adj. Of or pertaining to the bone in the base of the cranium, frequently forming a part of the occipital in the adult, but usually distinct in the young.
from The Century Dictionary and Cyclopedia
- Pertaining to the base of the occiput, or to the basilar process of the occipital bone.
- n. The centrum of the first (hindmost) cranial segment, forming the basis of the compound occipital bone, called in human anatomy the basilar process of the occipital, which anteriorly articulates or ankyloses with the basisphenoid, and posteriorly circumscribes in part the foramen magnum.
- n. In ichthyology, the lowest of the occipital bones.
Sorry, no etymologies found.
In such a mammal as a Beaver (Fig. 29), a line ('a b '.) drawn through the bones, termed basioccipital, basisphenoid, and presphenoid, is very long in proportion to the extreme length of the cavity which contains the cerebral hemispheres (' g h '.).
In such a mammal as a Beaver (Figure 28), a line ('a b '.) drawn through the bones, termed basioccipital, basisphenoid, and presphenoid, is very long in proportion to the extreme length of the cavity which contains the cerebral hemispheres (' g h '.).
Among the remains, the team noticed a spherical bone, called a basioccipital condyle, found in all mammals and reptiles that joins the base of the skull to the spinal cord.
The bones developed in relation to these cranial elements can be classified as follows: -- (1) the basioccipital, exoccipitals (paroccipitals?), supraoccipital and
As an example of serial homology we might take the centra of the vertebræ -- the vomer, the presphenoid, the basisphenoid, the basioccipital and the series of centra in the spinal column.
Vertebrates consists, according to Müller, of three vertebræ, whose centra are the basioccipital, the basisphenoid and the presphenoid.
Now of these bones, the basioccipital is in every way equivalent to a vertebral centrum, for it develops in the basilar plate round the notochord.
The "bodies" of these vertebræ are the body of the occipital (basioccipital), the two bodies of the sphenoid (basi - and pre-sphenoid), and the vomer.
The basisphenoid develops, like the basioccipital, in the flat _basis cranii_, but towards its anterior edge, between the large foramen (_h_) and the pituitary space (_i_).
The basioccipital is formed in the posterior part of the _basis cranii_, and the exoccipitals in the side walls of the trench in continuity with the fundament of the basioccipital (see Fig. 11).