decachord

noun4

1. •
   A musical instrument mentioned in the Psalms, having ten strings and thought to resemble a lute or psaltery.

   • The first is the view taken by the Syriac and Arabic versions, which make the lute to be the decachord, and the harp the mere accompaniment to a song. — 1871
2. •
   (historical) An Ancient Greek musical instrument with ten strings, resembling the harp.

   • Apollo himself is depicted with a decachord, that is, an instrument with ten tuned strings, or ten harmonising voices, otherwise a cithara. — 2011
3. •
   A set of ten pitches used to create a musical mode.

   • The reduced span of the system either indicates that the system was devised for the octochord or the decachord, or for the octochord with different tunings, in respect of UET VII 74. — 2005
4. •
   Anything having ten parts, especially something of mystical Christian significance.

   • The last presents the decachord theme in the form of a necklace of ten pieces of silver, precious and significant only when the pieces were not separated. — 1937