- 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