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This word means a celebration that occurs every two centuries.
Bicentennial
To reduce something to one-tenth or greatly reduce in number.
Decimate
A stanza of poetry consisting of four lines.
Quatrain
A term used to describe a 100-year milestone or anniversary.
Centenary
In geometry, this term refers to one of four sections formed by dividing a plane.
Quadrant
A series of three related literary or dramatic works.
Trilogy
A temperature scale with 100 degrees between the freezing and boiling points of water.
Centigrade
A group of four singers or musicians performing together.
Quartet
A group of three closely related things or elements.
Triset
A competitive event that involves ten different sports or activities.
Decathlon
A government or ruling body formed of three individuals sharing power.
Triumvirate
Involving two parties or sides, often working together in politics.
Bipartisan
Having two sides or parts, especially a document printed on both sides.
Bilateral
To divide something into two equal parts.
Bisect
A government system where power is concentrated in the hands of a single ruler.
Monarchy
A situation where one individual or company dominates a particular industry or market.
Monopoly
A piece of writing or performance involving a single speaker or performer.
Monologue
A design or logo that represents a person's initials or a company's name.
Monogram
Having a single legal voice or action, often in international relations.
Unilateral
An agreement or decision made by all members of a group without opposition.
Unanimous
A large and imposing single stone or monument.
Monolith
To make an exact copy or double of something.
Duplicate
A building or property divided into two separate living spaces.
Duplex
Involving only one group or country: One-sided
Unilateral
A three-pronged spear, especially as an attribute of Poseidon (Neptune)
Trident