Root

cebulka

(part of a hair under the skin)

katalog główny

(computing: highest directory of a directory structure)

korzeń

(part of a plant)

korzeń

(of a tooth)

korzeń

(graph theory: node in a tree that has no parent)

miejsce zerowe

(analysis: zero of a function)

pierwiastek

(arithmetic: number or expression which when raised to a power gives the specified number or expression)

pierwiastek

(analysis: zero of a function)

podstawa słowotwórcza

(linguistic morphology: primary lexical unit of a word)

rdzeń

(linguistic morphology: primary lexical unit of a word)

źródło

(primary source)

przekopywać się

(to rummage, root out)

ryć

(to turn up or dig with the snout - as pigs)