Triennium
Word Structure
WordHub has a local lexical record for “Triennium” with pronunciation and root analysis.
tri-
three
Forms: tri, tre
enn
year, yearly
Forms: ann, enn
-ium
noun suffix, particularly in scientific, medical, and biological contexts, commonly used for naming substances, elements, anatomical parts, or places -etum: a place characterized by or associated with certain types of plants
Forms: um, ium