1. An area or territorial division where official documentation, census data, or historical records are missing, fragmentary, or not fully preserved
The region with incomplete records made it difficult for genealogists to trace family histories.
A região com registros incompletos dificultou a tarefa dos genealogistas em rastrear as histórias familiares.
2. A geographic area where administrative or institutional data is partially unavailable or undocumented
Researchers studying the region with incomplete records had to rely on alternative sources.
Pesquisadores estudando a região com registros incompletos tiveram que confiar em fontes alternativas.