mar·a·thon·er 
(mărə-thŏn′ər)
(mărə-thŏn′ər)n.
One that participates in a marathon, especially a marathon runner.
mara·thon′ing n.
- neurasthenic
- neurasthenically
- neurectomy
- neurilemma
- neurilemmal
- neuristor
- neuritic
- neuritis
- neuro-
- neuroanatomical
- neuroanatomist
- neuroanatomy
- neurobehavioral
- neurobiological
- neurobiologist
- neurobiology
- neuroblast
- neuroblastoma
- neurochemical
- neurochemist
- neurochemistry
- neurodegenerative
- neurodevelopmental disorder
- neuroendocrine
- neuroendocrinological