| Main Entry: | |
| Part of Speech: | noun |
| Definition: | agent for negating the effect of an infection or poison |
| Synonyms: | antibiotic, antibody, antipoison, antiseptic, antiserum, antivenin, counteractant, counteragent, medicine, neutralizer, preventive, serum, vaccine |
| Main Entry: | serum |
| Part of Speech: | noun |
| Definition: | antitoxin |
| Synonyms: | agglutinin, agglutinogen, agglutinoid, antibody, antigen, antiserum, immunizer, immunotoxin, vaccine |