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word element [Gr.], down; lower; under; against; along with; very.
kat-, kata-, cat-, cata-
prefix meaning "to go down, to go against, or to reverse": katadidymus, katakinetomeric, katolysis.
prefix meaning "down, under, against, lower, with": catabiosis, catabolic.
cata-, cat-, cath-, kata-, kat- [Gr. kata, down, against, according to]
Prefix meaning down, downward, destructive, or against.