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defaulter
defeasance
defeasible
defeat
defeatist
defecate
defect
defective
defeminize
defence
Defence Force
defend
defendant
defender
Defender of the Faith
defending
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defensin
de·fen·sin [ dee fénssin ] (plural de·fen·sins)


noun 
Definition:
 
blood peptide that prevents infection: a peptide in a set of three present in human white blood cells that appear to play a role in the prevention or elimination of infection
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