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
heterodoxy
- n any opinions or doctrines at variance with the official or orthodox position
- n the quality of being unorthodox
heterodyne oscillator
- n an oscillator whose output heterodynes with the incoming radio signal to produce sum and difference tones
heterodyne receiver
- n a radio receiver that combines a locally generated frequency with the carrier frequency to produce a supersonic signal that is demodulated and amplified
heterogeneity
- n the quality of being diverse and not comparable in kind
heterogeneousness
- n the quality of being diverse and not comparable in kind
heterogenesis
- n the alternation of two or more different forms in the life cycle of a plant or animal