antigenic shift
The process by which different strains of a virus or viruses combine to form a new…The process by which different strains of a virus or viruses combine to form a new subtype having a mixture of the surface antigens of the original strains.
Meaning
1 senses(uncountable)The process by which different strains of a virus or viruses combine to form a new subtype having a mixture of the surface antigens of the original strains.
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable