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Definitions from WordNet

Definitions from the Web

Definition:

A chiasma refers to a crossing or intersection of nerve fibers or other structures in the form of an X-shaped structure.

Examples:

1. Noun (Anatomy):

The optic chiasma, located at the base of the brain, serves as the point where the optic nerves from each eye cross over to the opposite side of the brain.

Example sentence: The damage to his optic chiasma resulted in partial vision loss in both eyes.

2. Noun (Genetics):

In genetics, a chiasma is a point of crossover during the process of genetic recombination, where sections of homologous chromosomes exchange genetic material.

Example sentence: The formation of chiasma ensures genetic diversity by shuffling the genetic information inherited from both parents.

3. Noun (Botany):

In botany, a chiasma refers to the cross-shaped structure observed during meiosis, representing the site of crossover between homologous chromosomes.

Example sentence: The occurrence of chiasma in the pollen grains facilitates the production of genetically distinct offspring in plants.

4. Noun (Art):

In art, chiasma is a composition technique where lines intersect or crisscross to create a visual focal point or dynamic balance.

Example sentence: The artist skillfully used chiasma to draw the viewer's attention to the center of the painting.

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