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pro·per·din | \ prō-ˈpər-dᵊn 
\
\Definition of properdin
: a blood serum protein that participates in the activation of complement in a pathway which does not involve the presence of antibodies
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properdin
nounpro·per·din | \ prō-ˈpərd-ᵊn \
\Medical Definition of properdin
: a blood serum protein that participates in the activation of complement in a pathway which does not involve the presence of antibodies
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The first known use of properdin was in 1954
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