What is deposition in thermodynamics?

Answer 1

Deposition is the direct solidification of a vapor by cooling; the reverse of sublimation.

Answer 2

Deposition in thermodynamics is the accumulation of a solid phase - usually by changing phase from gas to solid, solute to solid, or liquid to solid. (Really solute to solid is a special case of liquid to solid).

Answer 3

Deposition is process where molecules in vapor contacting a cold surface

deposit driectly on the cold suface as solid. Frost formation on a car is such a process.