D defs.my
Entry 1 sense Webster, 1913

Ferrotype

/fĕr'-ət-īpˌ/ · Fer·ro·type · IPA /fˈɛrətˌaɪp/
01 n. A photographic picture taken on an iron plate by a collodion process; -- familiarly called tintype.
  1. 1.
    A photographic picture taken on an iron plate by a collodion process; -- familiarly called tintype.