Exam: TOEFL

Definition: This word describes something that is related to the number twelve or is based on the number twelve, such as a system that uses twelve as its base.

Example: In mathematics, the duodecimal system is an alternative to the decimal system, using twelve as its base.

Definition: A term that refers to the number twelve or a system based on twelve.

Example: In a duodecimal system, numbers are counted in base twelve instead of the usual base ten.

Definition: Relating to the first section of the small intestine, known as the duodenum.

Example: The doctor explained that the duodenal ulcer was causing the patient's pain.

Definition: The first section of the small intestine that connects the stomach to the next part of the intestine.

Example: Food passes from the stomach into the duodenum for further digestion.

Definition: A conversation or dialogue that takes place between two people.

Example: The play featured a captivating duologue that highlighted the characters' conflicting emotions.

Definition: A situation in which two companies or groups have control over a market or industry, limiting competition.

Example: In a duopoly, the two companies often set prices and control supply together.

Definition: Relating to something that has two parts or is double in nature, such as a building with two separate living units or a system that allows two-way communication.

Example: The duplex apartment has two separate living spaces, making it ideal for families.

Definition: A type of house that is divided into two separate living units, each usually having its own entrance.

Example: They decided to buy a duplex so they could rent out one side.

Definition: To create or convert something into a duplex format, which typically means having two parts or layers.

Example: The technician will duplex the document to save paper.

Definition: A device that allows a radio antenna to send and receive signals by switching between the two functions.

Example: The duplexer enables the radio to communicate effectively by using the same antenna for both sending and receiving signals.

Definition: Referring to something that is exactly the same as another or exists in two identical parts.

Example: The team played duplicate bridge, comparing their scores with another team.

Definition: To become an exact copy of something.

Example: The document will duplicate if you press the button twice.

Definition: A copy of something that is exactly the same as the original, often made to have an extra or backup version.

Example: I made a duplicate of the important document in case I lost the original.

Definition: To create an exact copy of something.

Example: The artist decided to duplicate her famous painting for the exhibition.

Definition: The state of being copied or repeated, often referring to something that is an exact copy of another.

Example: The duplication of the document was necessary for the meeting.

Definition: Relating to something that is a copy or reproduction of another thing.

Example: The report contained duplicative information that was already included in the previous document.