Per capita is a Latin prepositional phrase: per (preposition, taking the accusative case, meaning âby, by means ofâ) and capita (accusative plural of the noun caput, âheadâ).The phrase thus means âby headsâ or âfor each headâ, i.e., per individual/person.The term is used in a wide variety of social sciences and statistical research contexts, including government statistics, economic indicators, and built environment studies.he phrase thus means âby headsâ or âfor each headâ, i.e., per individual/person. The term is used in a wide variety of social sciences and statistical research contexts, including government statistics, economic indicators, and built environment studies.
Medical Definition of trichromatism. 1  1: the quality or state of being trichromatic. 2  2: color vision based on the perception of three primary colors and especially red, green and blueâcompare deuteranomaly, protanomaly.
Chromotherapy, sometimes called color therapy, colorology or cromatherapy, is an alternative medicine method, which is considered pseudoscience.