hestia
- n (Greek mythology) the goddess of the hearth and its fire in ancient mythology; identified with Roman Vesta
heteranthera dubia
- n grassy-leaved North American aquatic plant with yellow star-shaped blossoms
heterobasidiomycetes
- n category used in some classification systems for various basidiomycetous fungi including rusts and smuts
heterocercal fin
- n a tail fin with unequal lobes in which the vertebral column turns upward into the larger lobe as in sharks
heterocycle
- n a compound containing a heterocyclic ring
- n a ring of atoms of more than one kind; especially a ring of carbon atoms containing at least one atom that is not carbon
heterocyclic ring
- n a ring of atoms of more than one kind; especially a ring of carbon atoms containing at least one atom that is not carbon
heterodactyl foot
- n a bird's foot having the first and second toes of each foot directed backward and the third and fourth forward
heterodon
- n a genus of small colubrid snakes containing the North American hognose snakes