n. A stylistic scheme in which words from the same root are used together, or a word is repeated in a different inflection or case.
the GNU version of the Collaborative International Dictionary of English
n. A figure by which a word is repeated in different forms, cases, numbers, genders, etc., as in Tennyson's line, -- “My own heart's heart, and ownest own, farewell.”
The Century Dictionary and Cyclopedia
n. In rhetoric, a figure consisting in the use of different cases or inflections of the same word, or of words of the same immediate derivation, in the same context.
n. (Unless the death of Death had brought death to death by [his] death, the door of eternal life would have been closed.)
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. repetition of a word in a different case or inflection in the same sentence
Word Usage
"I'm sitting here trying to decide whether a particular specimen of paronomasia is to be considered polyptoton or antanaclasis."