hemorrhage, hemorrhagic, hemoglobin, hemostasis

hagiarchy, hagiolatry, hagiology, hagiography

half-brother, half-sister, halfway

halide, halogen

haplography, haploid, haplology

heliocentric, heliograph, heliolatry, heliophobia

hemidemisemiquaver, hemisphere, hemistich

hendecagon, hendecaploidy, hendecasyllabic

heptagon, heptahydrate

heterodox, heterogeneous, heterography, heteromorphic, heteronomy, heteronym, heterosexual, heterotroph, heterotrophy, heterozygous

histogram, histology, histone, histidine

history, historic, historical, historiography

holomorphic, holophrastic

homeopathy, homeostasis, homeostatic

homosexual, homogamy, homogeneous, homograph, homologous, homonym, homophone, homozygous, homoerotic, homophile, homophobic

hyaline, hyaloid, hyalogen, hyaloplasm, hyalograph

hyetal, hyetograph, hyetology, hyetometer, hyetogram

hygrology, hygrometer, hygroscope

hylomorphic

hymen, hymenoplasty, hymeneal

hyperactive, hyperactivity, hyperaesthesia, hyperalgesia, hyperaphia, hyperbaric, hypercritical, hyperextend, hyperglycemia, hyperinflation, hyperkinetic, hyperlink, hypermnesia, hyperopia

hypnophobia, hypnopompic, hypnosis, hypnotherapy

hypodermic, hypogamy, hypogastrium, hypoglycemia, hypomania, hypostasis, hypotaxis, hypothalamus, hypothermia, hypothesis

hypsography, hypsometry