Definition of paedology in US English:

paedology

(also paidology, pedology)

noun

historical
  • The study of the growth and (especially mental, social, or educational) development of children; child psychology.

Origin

Late 19th century; earliest use found in Appletons' Journal. From paedo- + -logy.

Pronunciation

paedology

/piːˈdɒlədʒi/