English dictionary · noun

trigonometry

The branch of mathematics that deals with the relationships between the sides and angles of (in particular) right-angled triangles, as represented by the trigonometric functions, and with calculations based on said relationships.

Meaning and definitions

1. The branch of mathematics that deals with the relationships between the sides and angles of (in particular) right-angled triangles, as represented by the trigonometric functions, and with calculations based on said relationships.

Connected roots

• metr-

  measure

Explore the word family

These words share a recorded root connection. A shared root is a learning clue; it does not establish every step in a word’s history.

• diameter

  a straight line passing through the center of a circle

• geometry

  the branch of mathematics concerned with points, lines, surfaces, and solids

• perimeter

  The sum of the distance of all the lengths of the sides of an object.

• symmetry

  Exact correspondence on either side of a dividing line, plane, center or axis.

• thermometer

  an instrument for measuring temperature

• barometer

  An instrument for measuring atmospheric pressure.

• telemetry

  the automatic measurement and transmission of data from remote sources

• optometry

  The art and science of vision and eye care.

• speedometer

  An instrument located within the dashboard of a vehicle that measures and indicates the current speed of the vehicle.

• altimeter

  An apparatus for measuring altitude.

• odometer

  An instrument, usually embedded within the speedometer of a vehicle, that measures the distance the vehicle has traveled since production.

• micrometer

  A device used to measure distance very precisely but within a limited range, especially depth, thickness, and diameter.

• chronometer

  A device for measuring time, particularly a precision mechanism for measuring time of day.

• pedometer

  A device, often electronic, that measures the number of steps taken, and thus estimates the distance walked.

• photometry

  The measurement of various aspects of light, especially its intensity.

• stoichiometry

  The study and calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).

• calorimetry

  The science of measuring the heat absorbed or evolved during the course of a chemical reaction or change of state.

• calorimeter

  An apparatus for measuring the heat generated or absorbed by either a chemical reaction, change of phase or some other physical change.

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