A co-applicant is someone who applies for something along with another applicant.

The cast of Applicant Fisch - 2007 includes: Andreas Stoiber as Applicant Fisch

"The store owner discussed the position with the applicant."

An intervening applicant refers to a rule in the US court system that says that an applicant can intervene in one of two situations. Either a) the applicant has the right to intervene when a federal statute gives the applicant the right to intervene unconditionally or b) the applicant can intervene if they have an interest of some kind that relates to the property or subject of the lawsuit. See the related links for more information.

The man who applied for citizenship was considered an applicant.