ɪˈmju:n adj. 1 a (often foll. by
against,
from, to) protected against an
infection owing to
the presence of
specific antibodies, or
through inoculation or inherited or acquired
resistance. b relating to
immunity (immune mechanism). 2 (foll. by from, to)
free or
exempt from or
not subject to (some
undesirable factor or circumstance). øimmune
response the
reaction of the
body to the
introduction into it of an
antigen. [ME f. L immunis exempt from
public service or
charge (as
IN-(1), munis
ready for service):
sense 1 f. F immun]