-ism, -ismus

(Greek, ismos; Latin, ismus: a suffix: belief in, practice of, condition of, process, characteristic behavior or manner, abnormal state, distinctive feature or trait)

Orientation at a right angle to the direction of incident light.
The doctrine or the phenomena of the transmission of radiant heat.
diatropism (s) (noun), diatropisms (pl)
1. The tendency of a plant or plant part to grow at right angles in response to an external stimulus such as light.
2. The tendency of some plant organs to take a transverse position (sideways or an an angle) to the line of action of an outside stimulus.
A condition in which there are two beats or waves of the arterial pulse to each beat of the heart.
dictatorialism (s) (noun), dictatorialisms (pl)
An arrogant practice; a negative method of action or behavior: "The company supervisor was known for his occasional dictatorialism and this resulted in many of his employees resenting his harsh treatment."
1. The presence of only two digits on a hand or foot.
2. Congenital condition (at birth) of having two fingers on a hand or two toes on a foot.
diplanetism (s) (noun), diplanetisms (pl)
A condition whereby there are two periods of motility or movement that is spontaneous without external aid which is usually applied to a microorganism in one lifetime: The zoospores of some fungi are examples of diplanetisms.
disciplinarianism (s) (noun), disciplinarianisms (pl)
The process of enforcing rules and behavior in an army, a school, a family, etc.
disunionism (s) (noun), disunionisms (pl)
The breaking of a federation or organized single government: "The national leader rejected the disunionism proposed by the rebellious states."