triennium

As nouns the difference between triennium and triennia

is that triennium is a period of three years while triennia is .

As nouns the difference between taxonomy and triennium

is that taxonomy is the science or the technique used to make a classification while triennium is a period of three years.

Trieterical is a related term of triennium.

As an adjective trieterical

is (rare) triennial: occurring once in three years.

As a noun triennium is

a period of three years.

Triennium is a related term of year.

As nouns the difference between year and triennium

is that year is the time it takes the Earth to complete one revolution of the Sun (between 365.24 and 365.26 days depending on the point of reference) while triennium is a period of three years.

As nouns the difference between period and triennium

is that period is the length of time for a disease to run its course while triennium is a period of three years.

As an adjective period

is appropriate for a given historical era.

As an interjection period

is and nothing else; and nothing less; used for emphasis.

As a verb period

is to come to a period; to conclude.