First Known Use: 1665
Dictionary
1serum
noun se·rum \ˈsir-əm\
medical : the part of blood that is like water and that contains substances (called antibodies) that fight disease
medical : serum from an animal's blood that can be added to a person's blood to prevent or cure disease
biology : the watery part of a fluid found in a plant
plural serums or se·ra \-ə\
Full Definition of SERUM
1
: the watery portion of an animal fluid remaining after coagulation: a (1) : blood serum (2) : antiserum b : whey c : a normal or pathological serous fluid (as in a blister)
2
: the watery part of a plant fluid
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Origin of SERUM
Latin, whey, wheylike fluid; akin to Greek oros whey
Rhymes with SERUM
2serum
adjective
Definition of SERUM
: occurring or found in the blood serum <serum cholesterol> <serum antibodies>
First Known Use of SERUM
1876
SERUM Defined for Kids
serum
noun se·rum \ˈsir-əm\
Definition of SERUM for Kids
: the clear liquid part that can be separated from coagulated blood and contains antibodies
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