1. The central thread running in the axis of the chromosome. 2. SYN: axial filament. 3. The distinctive array of microtubules in the core of eukaryotic cilia and flagella comprising a central pair surrounded by a sheaf of nine doublet microtubules. [axo- + G. nema, a thread]
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ax·o·neme 'ak-sə-.nēm n the fibrillar bundle of a flagellum or cilium that usu. consists of nine pairs of microtubules in a ring around a single central pair
ax·o·ne·mal .ak-sə-'nē-məl adj
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ax·o·neme (akґso-nēm) [axo- + Gr. nēma thread] the central core of a cilium or flagellum, consisting of a central pair of microtubules surrounded by nine other microtubule pairs; called also axial filament.Medical dictionary. 2011.