{"era":"current","word":"antibody","meaning":"A blood protein produced in response to and counteracting a specific antigen.","children":[{"era":"late 19th century","word":"anti-","meaning":"a substance acting against the body","children":[],"language":"English (modern coinage)"},{"era":"late 19th century","word":"body","meaning":"a substance acting against the body","children":[],"language":"English (modern coinage)"}],"language":"Modern English"}