polyptoton Meaning, Definition & Usage

  1. noun repetition of a word in a different case or inflection in the same sentence
    • My own heart's heart

WordNet

Pol`yp*to"ton noun
Etymology
L., fr. Gr. having, or being in, many cases; many + case.
Definitions
  1. (Rhet.) 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."

Webster 1913