physiologic unit

phys·i·o·log·ic u·nit

1. the ultimate (hypothetical) vital unit of protoplasm, as conceived by Spencer; 2. the smallest division of an organ that will perform its function; for example, the uriniferous tubule.

phys·i·o·log·ic u·nit

(fiz'ē-ŏ-loj'ik yū'nit) 1. Spencer's concept of the ultimate (hypothetical) vital unit of protoplasm. 2. The smallest division of an organ that will perform its function, e.g., the uriniferous tubule.