epididymis

n. (pl. epididymides) an elongated tubule running along the top and back of the testis that stores spermatozoa received from seminiferous tubules within the testis. It empties into the vas deferens. —epididymal adj.

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Psychology term of the day

July 27th 2024

horizontal–vertical illusion

the misperception that vertical lines are longer than horizontal lines when both are actually the same length. The vertical element of an upper case letter T, for example, looks longer than the cross bar, even when the lengths are identical. See also foreshortening; Helmholtz square illusion.