Exam: TOEFL

Definition: A device or tool used to perform mathematical calculations, often electronically.

Example: I used a calculator to help me with my math homework.

Definition: Related to or caused by stones or calculi that can form in the body, often in organs like the kidneys or gallbladder.

Example: The patient was diagnosed with a calculous condition that required medical treatment.

Definition: A system or chart that shows the days, weeks, and months of a year, helping people keep track of time and events.

Example: I marked my birthday on the calendar so I wouldn't forget it.

Definition: To write or enter an event or appointment in a schedule or planner.

Example: I need to calendar my doctor's appointment for next week.

Definition: A machine that smooths and makes paper or cloth shiny by pressing it through rollers.

Example: The factory uses a calender to finish the fabric before it is shipped out.

Definition: To press paper or cloth using a machine with rollers.

Example: The factory uses a calender to smooth the fabric before it is dyed.

Definition: Relating to a system of organizing days, months, and years, often used for planning events or scheduling.

Example: The calendric system helps us keep track of important dates throughout the year.

Definition: Relating to a system of organizing days, months, and years, often used for planning events or scheduling.

Example: The calendrical system helps us keep track of important dates throughout the year.

Definition: To check or adjust something so that it works correctly or accurately, often by comparing it to a standard measurement.

Example: The technician needs to calibrate the machine to ensure it operates properly.

Definition: The process of adjusting and measuring the accuracy of a device or instrument to ensure it gives correct readings.

Example: The technician performed a calibration on the machine to ensure it was working properly.

Definition: The internal diameter of a gun barrel or the size of a bullet that fits into it. It can also refer to the quality or level of someone's ability or character.

Example: The rifle has a calibre of 7.62 mm, making it suitable for long-range shooting.

Definition: A man-made chemical element that is radioactive and has the atomic number 98. It is created by bombarding curium with helium isotopes and is known for emitting alpha particles.

Example: Californium is used in some nuclear reactors and for neutron activation analysis.