Definition of ovalization in English:
ovalization
(also ovalisation)
noun ˌəʊvəlʌɪˈzeɪʃnˌəʊv(ə)lʌɪˈzeɪʃn
The action of becoming oval or of making something oval; an instance of this.
Origin
1960s; earliest use found in The Times. From ovalize + -ation.