sororate

(sə rôrit, -āt)

noun

the custom in some cultures of marrying the younger sister of one's wife, esp. after the wife's death

Origin: ModL < L soror, sister + -ate

See sororate in American Heritage Dictionary 4

noun
The custom of marriage of a man to his wife's sister or sisters, usually after the wife has died or proved sterile.

Origin:

Origin: From Latin soror, sister; see sororal

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