ALL meanings of chiasma
chi·as·ma
C c - noun chiasma the cross-shaped connection produced by the crossing over of pairing chromosomes during meiosis 3
- noun chiasma the crossing over of two parts or structures, such as the fibres of the optic nerves in the brain 3
- noun chiasma a crossing or intersection of the optic nerves in the hypothalamus of the brain 3
- noun chiasma a point of contact between chromosomes during meiosis where two chromatids interchange corresponding segments 3
- noun chiasma any crosswise function 3
- noun chiasma A point at which paired chromosomes remain in contact during the first metaphase of meiosis, and at which crossing over and exchange of genetic material occur between the strands. 1
- noun plural chiasma Anatomy. a crossing or decussation, as that of the optic nerves at the base of the brain. 1
- noun plural chiasma Cell Biology. a point of overlap of paired chromatids at which fusion and exchange of genetic material take place during prophase of meiosis. 1
- noun chiasma (anatomy) A crossing of two nerves, ligaments etc. 0
- noun chiasma (genetics, cytology) The contact point between the two chromatids of a chromosome during meiosis. 0