What is the meaning of the combining form "rhytid/o"?

The combining form "rhytid/o" specifically refers to wrinkles, which are folds, ridges, or creases in the skin. This term is commonly used in dermatology and cosmetic discussions, particularly in relation to aging and skin care. For example, procedures aimed at reducing the appearance of wrinkles often utilize the term "rhytidectomy," which refers to a facelift surgery. Understanding this combining form is essential for interpreting various medical terms related to skin conditions and aesthetic treatments.

The other options represent different anatomical or physiological concepts, making them unrelated to the meaning of "rhytid/o."