different between quadrennial vs quadrennium

English

Alternative forms

• quadriennial

Etymology

Borrowed from Latin quadriennium (“four-year period”), from quattuor (“four”) + annus (“year”); surface analysis quadr- +? -ennial.

Pronunciation

• (UK) IPA^(key): /?kw??d??n.i.?l/
• (US) IPA^(key): /?kw??d??ni.?l/
• Rhymes: -?d??n??l

Adjective

quadrennial (not comparable)

1. Happening every four years.
   • 1852, Millard Fillmore, State of the Union Address:

     The quadrennial election of Chief Magistrate has passed off with less than the usual excitement.

2. Lasting for four years.

Derived terms

• quadrennially

Related terms

• triennial
• biennial
• perennial
• annual

Noun

quadrennial (plural quadrennials)

1. A four-year period, a quadrennium.

English

Etymology

From Latin quadrennium, from quadri- (“four”) + annus (“year”) + -ium (“-ium: forming neuter nouns”).

Pronunciation

• IPA^(key): /kw??d??n?j?m/

Noun

quadrennium (plural quadrenniums or quadrennia)

1. A period of 4 years, (especially historical astronomy) the sets of four years in the Egyptian and Greek calendars.

Synonyms

• tetraeteris, tetraeterid

Related terms

• quadrennial
• (3-year period): triennium
• (5-year period): quinquennium, quinquenniad, quintennium, lustrum
• 10-year period: decade
• 100-year period: century
• 1000-year period: millennium