The term trichome comes from the Greek τρίχωμα (-ατος), der. of ϑρίξ τριχός “hair”; the trichomes are in fact thin growths or appendages present in plants and protists.
Trichomes perform different functions and, therefore, also have different structures.
Some examples of trichomes are hair or hairs, glandular hairs, scales and papillae.
Furthermore, the frequency of trichomes on the epidermis and the development of their shield vary from species to species, helping to condition the environment.
Trichomes are therefore small growths that perform many important functions.
For example, in Cannabis sativa the trichomes are those that produce the typical resin of hemp flowers.
There are also trichomes with other functions such as absorbent trichomes.
The absorbent trichome can also be called a tricopompa by the German botanist Mez (1904).