materia gris

la materia gris
A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
feminine noun
a. gray matter
Regionalism used in the United States
(United States)
El grupo de neurobiólogos está estudiando los cambios en el volumen de la materia gris en el cerebro de mujeres embarazadas.The team of neurobiologists is studying the changes in the volume of gray matter in the brains of pregnant women.
b. grey matter
Regionalism used in the United Kingdom
(United Kingdom)
Algunos estudios han demostrado que el aprender un nuevo idioma puede afectar la densidad de la materia gris en algunas áreas del cerebro.Some studies have demonstrated that learning a new language can affect grey matter density in some areas of the brain.
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