Pronunciation: [lˈe͡ɪbi͡əmz] (IPA) 
The correct spelling of the plural form of labium is "labia." The word "labiums" is not a word and should not be used. The pronunciation of "labia" is /ˈleɪbiə/, with stress on the first syllable of the word. The "i" in "labia" is pronounced as a long "i" sound, as in the word "pie," and the "a" is pronounced as a short "a" sound, as in the word "cat." Proper spelling and pronunciation are important in clear communication.
Labiums, in anatomy, refer to the structures that form the outer parts of the mouth in humans and other mammals. More specifically, labiums are the fleshy, movable folds that surround the oral cavity and act as protection and aids in various physiological functions. The term is derived from the Latin word "labium," meaning "lip."
In humans, there are two labiums, known as the upper and lower lips, which are responsible for essential functions such as speech, eating, and emotive expressions. The labiums consist of a thin layer of smooth skin on the outer surface, while the inner surface is lined with a mucous membrane. They contain abundant blood vessels, nerve endings, and muscles that allow for mobility and precise control of movements.
The labiums play a crucial role in producing sounds during speech, as they help shape and control the airflow from the lungs through the oral cavity. They are also involved in the process of mastication, collectively working with the tongue, teeth, and other oral structures to facilitate biting, chewing, and swallowing of food. Additionally, the labiums aid in maintaining the moisture, temperature, and cleanliness of the oral region.
Labiums can vary in shape, size, and color among individuals, reflecting genetic and ethnic diversities. Furthermore, they can be subject to various conditions, including infections, injuries, deformities, or alterations through cosmetic procedures.
