Polysynaptic

Part of speech: adjective

Definitions

1. Characterized by the interaction of several synapses, this term describes processes in the nervous system that necessitate the cooperative action of multiple neurons for signal transmission
2. Referring to neural mechanisms that involve two or more synaptic connections, it indicates a type of communication in the nervous system reliant on numerous neuron interconnections
3. Describing neural pathways that require more than one synapse for transmitting signals across neurons

Etymology: "Polysynaptic" is a modern scientific coinage, built from two parts that have been circulating in English for a long time. The first, "poly-", comes from Ancient Greek "polús", meaning "many" or "much", and it appears throughout English in words like polygon and polymer. The second, "synaptic", belongs to the vocabulary of neuroscience: a synapse is the junction where one nerve cell passes a signal to another, and the term itself was formed from Greek roots meaning roughly "a joining together." Put together, "polysynaptic" describes a neural pathway in which a signal must cross several of these junctions before it reaches its destination, as opposed to a pathway with only one. The word therefore names a structural feature of the nervous system rather than anything in everyday speech, which explains why it is built so transparently from its components.

Synonyms: multisynaptic, complex, interconnected, networked, composite

Antonyms: monosynaptic, simple, single, isolated, direct