tricho-, trich-, -tricha, -trichia, -trichan, -trichic, -trichosis, -trichous, -thrix, -trichum, -trichy +

The ability to see three primary colors: Most people possess trichromatopsia, or the capability to see red, green, and blue with the help of the three functioning color receptors in the retina of the eye.

A reference to or connected with tricology: Jack was interested in the tricological research at the hospital in his city which was concerned with the health and treatment of the human hair andscalp.

Someone who specializes in the study and treatment of hair and related problems: Tim's father was a tricologist who not only did research on hair, but was also a hairstylist who was trained specifically to treat problems of the hair and scalp.

The science dealing with hair: Nancy wanted to study tricology and become an expert in all aspects of hair, especially of human hair.

Loss of hair and thinning hair is usually a temporary condition that can affect both women and men. Balding is most often a hereditary condition that affects a large proportion of men. Alopecia is more serious hair loss, but all of these can be treated with hair replacement therapy and other tricology treatment.

Tricology is its own branch of science derived from beauty care (cosmetology) and dermatology.

A genus of green algae typifying the family Ulotrichaceae: The species of the phylum Ulothrix are common in ponds, etc.; they consist of simple filaments with band-shaped green chloroplasts.

A reference to the family of Ulotrichaceae: The algae pictured in Jane's biology book were described as being ulotrichaceous, or illustrated as being the green algae.

Pertaining to one of the archaic classification of Ulotrichi: The ulotrichan people are characterized by their hair that is wooly and tightly curled

The division of mankind which embraces the races having woolly or crispy hair: In Jack's anthropology book, he read about the Ulotrichi as a certain race of people having tightly curled hair and that looked quite fuzzy, like wool.

In anthropology, Ulotrichi relates to Huxley's classification of the races having woolly or crispy hair.

Thomas Henry Huxley (1825-1895) was a British biologist.

Belonging to a group of people having woolly or crisply curly hair: Mary's boyfriend was thought to be a ulotrichous teenager because of his hair that was naturally tightly curled,

The quality of possessing woolly or crispy hair: In the magazine at the hairdresser's, Sally found an article about ulotrichy which described people with naturally tightly curled hair, and some of them wanting so much to have very straight hair!

The genus of the existing American sparrows (family Passerellidae): The phylum of Zonotrichiaincludes five sparrows, and four of them are species of Noerth America.

One sparrow of the Zonotrichia is the American white-crowned sparrow;