A "research stay" refers to a period of time when someone, usually a student or a scholar, visits another institution or location to carry out research work or collaborate with other researchers in a specific field. Full definition
We wanted a place that was baby friendly so after much research we stayed at the Hilton Waikoloa Village hotel. (shoppingmycloset.com)
These facilities are typically accessible to international scholars, and DAAD North America's Faculty Research Visit Grant helps academics carry out short - term research stays in Germany (1 - 3 months) by covering their living expenses while in the country for research purposes. (daad.org)
The SNSF also awards supplementary grants, e.g. for research stays abroad for doctoral students (mobility grants) or for postdocs with family commitments (120 % support grants). (snf.ch)