1. any of a group of simple proteins found in plant and animal tissues, soluble in salt solutions but not in pure water
Usage: biochemistry; typically used in plural form or as a mass noun
2. a protein in blood plasma that includes antibodies and other immune factors
Usage: medical/immunology context

Examples

• Globulins make up a significant portion of the protein content in blood serum.
• The doctor ordered a blood test to measure the patient's globulin levels.
• Egg white contains globulins that help give it its protein-rich properties.
• Immunoglobulins are a type of globulin that function as antibodies in the immune system.
• Plant seeds store globulins as a major source of protein for germination.
• The ratio of albumin to globulin is an important indicator of liver and kidney function.