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noun

chiasma

an intersection or crossing of two tracts in the form of the letter X

In a sentence

Three example sentences with chiasma, each labelled with its topic.

  • A tumor pressing on the optic chiasma cost the patient both outer visual fields within a single year.

    Medicine

  • Fibers from each eye meet at the chiasma, where roughly half swap over to the opposite half of the brain.

    Science

  • Vision researchers map how signals split at the chiasma before either hemisphere builds its own picture of the room.

    Psychology

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Found in these word lists

Each source is a published word list that contains chiasma. No exam board publishes an official GRE, GMAT or SAT list; GMAT words come from GRE lists and the Academic Word List.