malformation

noun

Etymology: Etymology tree Latin maleder. Old French mal- English mal- English formation English malformation From mal- + formation.

1. An abnormal formation.

   “Mr. Hyde was pale and dwarfish, he gave an impression of deformity without any nameable malformation, he had a displeasing smile, he had borne himself to the lawyer with a sort of murderous mixture of timidity and boldness, and he spoke with a husky, whispering and somewhat broken voice; […]”

2. An abnormal developmental feature of offspring.