A developmental process, independent of morphogenetic (shape) change, that is required for the hypoglossal nerve to attain its fully functional state. This motor nerve innervates all the intrinsic and all but one of the extrinsic muscles of the tongue.
Source:
GOC:cls,
GOC:dph,
GO_REF:0000021,
GOC:dgh,
GOC:jid,
ISBN:0838580343