Fieldwork is research done out in the real world rather than in a library or laboratory. Do fieldwork, months of fieldwork, fieldwork notes.
In anthropology it means living among the people studied for a long stretch, which is where the discipline's whole method came from. In archaeology and geology it is digging and surveying. What it shares everywhere is that conditions cannot be controlled.
1nounfieldworkResearch done out in the real world, not the library or lab.
“The biology students spent a week doing fieldwork on the seashore.”
fieldwork is research.
Field plus work, in Middle English. The research sense grew in the nineteenth century.
Middle English
*felde-werk
English, today
fieldwork
From Middle English felde-werk (found in plural felde werkes), equivalent to field + work.
Etymology from Wiktionary, CC BY-SA