plural of triceratops

Common name of the extinct genus Triceratops; herbivorous ceratopsids from the late Cretaceous.

plural of triceps

plural of tricentennial

(bodybuilding) A standard pose in which one arm is held straight with the triceps flexed, with one's side turned to the judges.

(anatomy) The combination of the gastrocnemius and soleus muscles.

tercentenary

(history, rare) A one-thirtieth tax introduced in the Duchy of Württemberg in 1691.

Having three cells.

Of or pertaining to thirty years; occurring once in every thirty years.