Cognate (Latin: cognatus, "related by birth") may mean:

• Cognates, words that have a common etymological origin
  • False cognates, words that appear to be cognates, but are not
  • Cognate object, a verb's object that is etymologically related to the verb
• Cognate (kinship), person who shares a common ancestor
• Cognate linkage, a kinematic linkage that generates the same coupler curve as another linkage of a different geometry
• Cognate interaction, in immunology denotes the specific, contact-dependent interaction between two cells.

Look up cognate in Wiktionary, the free dictionary.

• Connation, in plants, the fusion of organs of the same type

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