Orology
Optology
Ophthalmology
Ornithology
One word substitution for - Study of mankind
One word substitution for - Study of statistics of births, deaths, disease to show the state of community
One word substitution for - Study of the evolution of man as an animal
One word substitution for - Substance used in surgery to produce unconsciousness.
One word substitution for - That which cannot be believed
One word substitution for - That which is perceptible by touch is
One word substitution for - The absence of law and order
One word substitution for - The act of killing a whole group of people, especially a whole race.
One word substitution for - The art of cutting trees and bushes into ornamental shapes
One word substitution for - The belief that everyone is equal and should have the same right and opportunities.
