- heebie_jeebies
- highest common factor
- himantopus himantopus leucocephalus
- hordeum jubatum
- hexahydrobenzene
- Hyacinthoides
- Hemerocallis
- hosier
- horse trader
- hatteras island
- heart line
- habit forming drug
- habit disturbance
- hitting the target
- hapten_protein conjugate
- hatched
- horned dinosaur
- hemachatus haemachatus
- hemera
- Helodermatidae
- hyperemesis
- hematopoietics
- hematopoeitic stem cell
- humification
- histone
- hemolysinic icterus
- hydremia
- hypothrombinemia
- histiocytosis
- Hirudo
- Hexamita
- herpangia
- high horse
- hurthle cell adenoma
- henry m. robert
- henry martyn robert
- haul away
- hand_down
- horsecar
- handwoven
- handstitched
- hand_wash
- hoagy carmichael
- hoarseness (of throat)
- hosni mubarak
- headfirst
- heavy hearted
- helvella acetabulum
- heterostracan
- higginsons syringe