cata-, cat-, cath-, kata-

(Greek: down, downward; under, lower; against; entirely, in accordance with, completely, back; often used as a prefix)

acatalepsia (s) (noun)
1. An abnormal inability to comprehend, or to understand: "Some people have acatalepsia which is a form of mental deficiency."
2. In philosophy, an incomprehensibleness, or the impossibility of comprehending or conceiving anything: "Acatalepsia is the incomprehensibility of things; such as, the doctrine held by the ancient Skeptic philosophers, that human knowledge cannot be certain, but only the possibility that something will happen."
acatalepsy (s) (noun)
1. An ancient Skeptical view that no more than probable knowledge is available to human beings: "The explorers found the ancient documents about acatalepsy which clarified the Skeptical theories of knowledge.
2. The impossibility of complete discovery or comprehension; incomprehensibility: "For Dave's cousin, advanced mathematics is an exercise in acatalepsy, reaching new degrees of not understanding."
3. The ancient doctrine that nothing can be known with certainty: "Enrique's historical statement suggests that medical diagnostic or prognostic acatalepsy is inherently uncertain."
acataleptic (adjective)
1. A reference to being deficient in understanding: "Tracy's acataleptic mind simply could not understand the new concepts introduced in his advanced physics class."
2. Characterized by being unknowable or necessarily uncertain: "As for the ancient explorers, when sailing across the ocean, they were experiencing acataleptic adventures."
acatamathesia (s), acatamathesias (pl) (nouns)
The perception (sensory) aspect of aphasia or dysphasia (any disturbance in the comprehension or expression of languages due to a brain lesion).
acataphasia (s), acataphasias (pl) (nouns)
A physical disorder in which a lesion to the central nervous system leaves a person unable to correctly formulate a statement or to express oneself in an organized manner.
acataposia
acatastasia
acatastatic
allelocatalysis
The once held theory of mutual stimulation of cells to growth, or stimulation of growth in a bacterial culture by the addition to it of other cells of the same type.
autocatalysis, autocatalytic
Catalysis of a reaction by one of its products; also called "autoactivation".
biocatalyst
A substance of biological origin that can catalyze a reaction; q.v. (quod vide = "which see"), an enzyme.
catabaptist
catabiotic
Used up while carrying on of the vital processes other than growth, or in the performance of function, referring to the energy derived from food.
catabolic
catabolism