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BNC: 4917 COCA: 9974

serum

1 ENTRIES FOUND:
serum /ˈsirəm/ noun
plural serums or sera /ˈsirə/
serum
/ˈsirəm/
noun
plural serums or sera /ˈsirə/
Learner's definition of SERUM
[noncount] medical : the part of blood that is like water and that contains substances (called antibodies) that fight disease血清;抗毒血清
medical : serum from an animal's blood that can be added to a person's blood to prevent or cure disease免疫血清
[noncount]
[count]
[noncount] biology : the watery part of a fluid found in a plant(植物的)浆液,树液

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