Any of certain masses of gray matter in the central nervous system, as the basal ganglia.
An encapsulated collection of nerve cell bodies, typically linked by synapses, and often forming a swelling on a nerve fiber.
A centre of intellectual or industrial force, activity, etc.
A benign cystic tumour on a tendon sheath or joint capsule.
A ganglion, cluster of many neuronal bodies where synapsing occurs.
A large membrane-enclosed organelle found in eukaryotic cells which contains genetic material.
The central part of a syllable, most commonly a vowel.
The core, central part of something, around which other elements are assembled.
An initial part or version that will receive additions.
The massive, positively charged central part of an atom, made up of protons and neutrons.