rechallenge1
/rɪˈtʃalɪn(d)ʒ/noun
1A challenge made in return; a second or repeated challenge.
2 Immunology and Medicine. The action of rechallenge; an instance of this.
Origin
Early 18th century; earliest use found in Francis Bugg (1640–1727), Quaker apostate. From re- + challenge.
rechallenge2
/rɪˈtʃalɪn(d)ʒ/verb
1 [with object] To challenge again.
2 [with object] Immunology and Medicine. To treat (a patient or animal) again with a particular infectious agent, antigen, or drug, in order to test for immunity, hypersensitivity, or other type of (often adverse) reaction.
Origin
Early 18th century. From re- + challenge. Compare rechallenge.