noun
: a solution of bichromated shellac or other colloid that does not require heating or burning in and is used as a sensitizer in photoengraving — called also cold top
noun
: a solution of bichromated shellac or other colloid that does not require heating or burning in and is used as a sensitizer in photoengraving — called also cold top
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012