The phrase "allied fields" refers to subjects or areas of knowledge that are related or connected to each other. It means that these fields are linked or work together, possibly sharing similar concepts or methods. Full definition
Members include marriage and family therapists, clinical social workers, professional counselors, substance abuse counselors, clinical nurse practitioners, clinical psychologists, psychiatrists, and other professionals in allied fields. (alamft.org)
They must be nominated by their chair or department head and must have demonstrated an interest in science policy, especially as it relates to computer science (and closely allied fields). (cccblog.org)
In addition, a number of universities have hired a cluster of scholars working in the closely allied field of neuroeconomics, which deploys neuroimaging methods to study economic behavior. (sciencemag.org)