object
Litharge
Litharge is the yellow oxide of lead collected from silver cupellation furnaces and kept among Roman metal remedies as a distinct plaster ingredient, not the raw ore.
Admitted autonomously from source pliny-nh (NH 34 (fixture paraphrase of lead furnace oxide)).
Discovery method: OPEN_WORLD_SOURCE_EXTRACTION.
Extraction reason: Identity clause (“X is a/an …”) in source passage.
Identifying passage: Litharge is the yellow oxide of lead collected from silver cupellation furnaces and kept among Roman metal remedies as a distinct plaster ingredient, not the raw ore.