adj 1 a : restricted by nature to a particular individual, situation, relation, or effect <a disease to horses> b : exerting a distinctive influence (as on a body part or a disease) < antibodies> 2 : of, relating to, or constituting a species and esp. a biological species n : a drug or remedy having a specific mitigating effect on a disease .
to horses> b : exerting a distinctive influence (as on a body part or a disease) <
