pre·ad·o·les·cence 
(prē′ăd-l-ĕsəns)
(prē′ăd-l-ĕsəns)n.
The period of childhood just before the onset of puberty, often designated as between the ages of 10 and 12 in girls and 11 and 13 in boys.
pre′ad·o·lescent adj. & n.
- heterochromatin
- heterochromatism
- heterochromosome
- heterochronic
- heterochronous
- heterochrony
- heterocycle
- heterocyclic
- heterocyst
- heterodactyl
- heterodactylous
- heterodactyly
- heterodox
- heterodoxy
- heterodyne
- heteroecious
- heteroecism
- heterogamete
- heterogametic
- heterogamic
- heterogamous
- heterogamy
- heterogeneity
- heterogeneous
- heterogeneously