noun. With regard to biological taxonomy, a primary subset of a category, consisting of a set of like, corresponding families.

ORDER: "The order is expressed with numbers, and the classes by letters, in the textbook."
Cite this page: N., Pam M.S., "ORDER," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/order/ (accessed January 19, 2021).