Etymology
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consanguinity (n.)

"kinship by common descent," c. 1400, from Old French consanguinité and directly from Latin consanguinitatem (nominative consanguinitas), from consanguineus "of the same blood," from assimilated form of com "with, together" (see con-) + sanguineus "of blood" (see sanguinary).

updated on March 05, 2018

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Definitions of consanguinity from WordNet

consanguinity (n.)
(anthropology) related by blood;
Synonyms: blood kinship / cognation
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.