serenely self-possessed and free from agitation especially in times of stress; "the performer seemed completely composed as she stepped onto the stage"; "I felt calm and more composed than I had in a long time"
made up of individual elements; "if perception is seen as composed of isolated sense data..."
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"
not easily perturbed or excited or upset; marked by extreme calm and composure; "hitherto imperturbable, he now showed signs of alarm"; "an imperturbable self-possession"; "unflappable in a crisis"