a major part of the central nervous system which conducts sensory and motor nerve impulses to and from the brain; a long tubelike structure extending from the base of the brain through the vertebral canal to the upper lumbar region
the junction between two neurons (axon-to-dendrite) or between a neuron and a muscle; "nerve impulses cross a synapse through the action of neurotransmitters"
a poor densely populated city district occupied by a minority ethnic group linked together by economic hardship and social restrictions
formerly the restricted quarter of many European cities in which Jews were required to live; "the Warsaw ghetto"
any segregated mode of living or working that results from bias or stereotyping; "the relative security of the gay ghetto"; "no escape from the ghetto of the typing pool"
a member of an ancient Jewish sect in Judea in the first century who fought to the death against the Romans and who killed or persecuted Jews who collaborated with the Romans
the size of something as given by the distance around it
the length of the closed curve of a circle
the boundary line encompassing an area or object; "he had walked the full circumference of his land"; "a danger to all races over the whole circumference of the globe"