How many letters does the top answer for “containing or yielding silver” have?

The most common answer is argentiferous (13 letters).

Crossword clue: containing or yielding silver

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

argentiferous 13 letters wn-def

containing or yielding silver

containing or yielding an acid. 50% similar → acidiferous

containing or yielding bone. 50% similar → ossiferous

containing or yielding salt 50% similar → saliferous