I. (ˈ)mä|nakˌsän, (ˈ)mō|- adjective
Etymology: mon- + Greek axōn axis — more at axis
1. : developed by growth along a single axis — used especially of a sponge spicule
2. : having monaxon spicules — used of a sponge
II. noun
( -s )
: something distinguished by a single axis or axial process (as a nerve cell) ; specifically : a monaxon sponge spicule