Tĕt'ra
A prefix from the Greek τέτρα (a prefix signifying four), from τέσσαρες, τέτταρες, four. (See TETRACHORD);—much used in composition, signifying four-fold, four times, four.
A prefix from the Greek τέτρα (a prefix signifying four), from τέσσαρες, τέτταρες, four. (See TETRACHORD);—much used in composition, signifying four-fold, four times, four.