Final answer:
Crepe de Chine is the French term for a smooth, semi-dull fabric with a creped surface on one side and satin finish on the other, commonly used for elegant clothing.
Step-by-step explanation:
The French term that describes a very smooth, semi-dull satin construction with satin floats on one side of the fabric, which can be made in silk, acetate, or blends, is Crepe de Chine.
This fabric is characterized by a slightly creped surface on one side and a smooth satin finish on the other, achieved through the use of highly twisted yarns. Crepe de Chine is known for its elegant drape and subtle luster, making it a popular choice for dresses and blouses.