chiasmatic, a.
(kaɪæzˈmætɪk)
[f. chiasma n.: see -atic.]
1. Anat. Of or pertaining to the optic chiasma.
| 1912 T. L. Stedman Med. Dict. (ed. 2) 169/2 Chiasmatic.., relating to the optic chiasm. 1930 Arch. Ophthalm. III. 507 These tumors, as previously pointed out, have their point of dural attachment over the chiasmatic sulcus. 1968 Amer. Jrnl. Ophthalm. LXV. 432/2 Chiasmatic arachnoiditis most commonly follows basal meningitis or head injury. 1990 Brain CXIII. 577 Chapters on the sylvian fissure, the carotid cistern, the chiasmatic cistern, [etc.]. |
2. Cytol. Exhibiting or involving the formation of chiasmata.
| 1965 Chromosoma XVI. 296 Male meiosis is chiasmatic and several of the larger bivalents usually form 3 chiasmata. 1992 Brain Res. DLXXVI. 332 (Abstr.) The distribution of the neuropeptide Y (NPY) was studied in geniculate and peri-chiasmatic regions in the lesser hedgehog-tenrec. |