"Multitimbral" refers to a musical instrument or synthesizer that can produce multiple different sounds or timbres simultaneously. This capability allows musicians to create complex arrangements by layering various instruments or sounds, enhancing the richness of the music. In a multitimbral setup, each sound can be controlled independently, often using different MIDI channels. This feature is commonly found in digital audio workstations (DAWs) and synthesizers like the Yamaha Motif or Korg Kronos, enabling composers to craft intricate compositions without needing multiple physical instruments.