prax·e·ol·o·gy also prax·i·ol·o·gy 
(prăk′sē-ŏlə-jē)
(prăk′sē-ŏlə-jē)n.
The study of human conduct.
[PRAX(IS) + -LOGY.]
prax′e·o·logi·cal (-ə-lŏjĭ-kəl) adj.
- hydrocarbonous
- hydrocast
- hydrocele
- hydrocephalic
- hydrocephaloid
- hydrocephalous
- hydrocephalus
- hydrocephaly
- hydrochloric acid
- hydrochloride
- hydrochlorofluorocarbon
- hydrochlorothiazide
- hydrochore
- hydrochory
- hydrocodone
- hydrocolloid
- hydrocolloidal
- hydrocortisone
- hydrocrack
- hydrocracker
- hydrocracking
- hydrocyanic acid
- hydrodynamic
- hydrodynamical
- hydrodynamically