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"
the action of stretching something tight; "tension holds the belt in the pulleys"
(physics) a stress that produces an elongation of an elastic physical body; "the direction of maximum tension moves asymptotically toward the direction of the shear"
a balance between and interplay of opposing elements or tendencies (especially in art or literature); "there is a tension created between narrative time and movie time"; "there is a tension between these approaches to understanding history"
(psychology) a state of mental or emotional strain or suspense; "he suffered from fatigue and emotional tension"; "stress is a vasoconstrictor"
the physical condition of being stretched or strained; "it places great tension on the leg muscles"; "he could feel the tenseness of her body"
any disease of the mind; the psychological state of someone who has emotional or behavioral problems serious enough to require psychiatric intervention