Definify.com
Webster 1913 Edition
Triliteral
Tri-lit′er-al
,Adj.
[Pref.
tri-
+ literal
.] Consisting of three letters; trigrammic;
– as, a
. triliteral
root or wordNoun.
A triliteral word.
Webster 1828 Edition
Triliteral
TRILIT'ERAL
,Adj.
TRILIT'ERAL
,Noun.