Definition

1. Noun:
   • A small electronic or mechanical device used for performing mathematical operations: A "calculator" is a portable tool designed to carry out arithmetic calculations such as addition, subtraction, multiplication, and division, often with more advanced functions.
   • A person who calculates or computes: An expert at performing mathematical calculations, often in a professional or scholarly context.

Examples of Usage

• Noun (Device):
  • I used a calculator to check the total on the invoice.
  • Most smartphones have a built-in calculator app.
• Noun (Person):
  • He was a brilliant calculator, able to solve complex equations in his head.
  • In the 19th century, human calculators were employed to create mathematical tables.

Advanced Usage

• "To be a human calculator": To be a person with an exceptional, almost machine-like ability to perform mental arithmetic.
  • The child prodigy was a human calculator, solving problems faster than anyone with a device.

Variants and Related Words

• Calculate (verb): To determine mathematically; to compute.
  • We need to calculate the average score.
• Calculation (noun): The process or result of calculating.
  • His calculation of the budget was accurate.
• Calculable (adjective): Able to be calculated or estimated.
  • The risks are calculable.
• Calculative (adjective): Relating to or involving calculation, often with a connotation of being shrewd.
  • She made a calculative decision to invest.

Synonyms

• Computer (archaic for a person): A person who performs computations.
• Reckoner: One who calculates or computes.
• Adding machine: A simpler, often mechanical, device for addition and subtraction.

Related Phrases

• Pocket calculator: A small, handheld electronic calculator.
  • He always carries a pocket calculator in his briefcase.
• Graphing calculator: An advanced calculator capable of plotting graphs and solving complex equations.
  • The engineering students are required to have a graphing calculator.

Noun

1. a small machine that is used for mathematical calculations
2. an expert at calculation (or at operating calculating machines)