horticulturalist (horticulturalists plural) A horticulturalist is a person who grows flowers, fruit, and vegetables, especially as their job. n-count. horticulturalist (horticulturalists plural) A horticulturalist is a person who grows flowers, fruit, and vegetables, especially as their job.
Category:Subject:Physiology. Books in this subject area deal with physiology: the study of the mechanical, physical, and biochemical functions of living organisms. Physiology has traditionally been divided between plant physiology and animal and all living things physiology but the principles of physiology are universal, no matter what particular organism is being studied.
Definition of physiology. 1  1 : a branch of biology that deals with the functions and activities of life or of living matter (as organs, tissues, or cells) and of the physical and chemical phenomena involved â compare anatomy. 2  2 : the organic processes and phenomena of an organism or any of its parts or of a particular bodily process.