| nonmedullated | <anatomy> Not medullated; without a medulla or marrow, or without a medullary sheath; as, a nonmedullated nerve fibre. Source: Websters Dictionary (01 Mar 1998) |
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| nonmedullated fibres | A fibre having no myelin covering (CNS); a naked axon; in the PNS represented by all axons lying in troughs in a single Schwann cell (Schwann cell unit); a slow conducting fibre. Synonym: gray fibres, nonmedullated fibres, Remak's fibres. (05 Mar 2000) |