pilo-, pil-, pili- +

The introduction of hair into an aneurysm to promote obliteration by producing thrombosis in the aneurysm: The outdated, neurosurgical] method of pilojection was introduced by J. P. Gallagher in 1964.

The study of hair; also trichology: Pilology is the science dealing with the anatomy, diseases, and function of the hair.

Descriptive of the reflex that produces goose bumps: The pilomotor arrector muscles of hair,, causes the contraction and produces "cutis ansertina" (goose flesh) and the erection of the hairs.

The pilomotor causes movements of hairs, as the "arrectores pilorum".

Pertaining to, characterized by, or having a nidus, or tuft of hairs: The spot on Jim's arm was diagnosed as a pilonidal cyst, which was arranged in a clump or wad of hair.

A pilonidal cyst contains hair as a nucleus or nidus.

1. Used to describe plant parts that are covered with soft hair.
2. Hairy; covered with hair; downy.
3. Covered with fine soft hair.

A reference to the structural unit of hairs: The pilosebaceous body parts consist of the hair itself, the follicle, the arrector pili muscle, and the sebaceous gland.

The abnormal growth of hair: Jeff had a case of pilosis which had to be thinned out at the barber shop every once in a while.

Excessive hairiness: Mr. Simpson had to shave every day, sometimes even twice a day, because he had a condition of pilosism.

Hair-splitting or quibbling; sophistry: An ingenious and penetrating pilpul is an argument that takes place especially in Jewish Talmudic study.

1. One of slender hair-like structures covering some plants: On some of her nicest plants, Susan noticed pilus covering the surface of the stems, which felt very smooth to touch.
2. One of the threadlike appendages of the skin; hair: A pilus consists of a slender, flexible shaft of cornified cells embedded by its root in a follicle.