thermometer

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noun ther·mom·e·ter \thə(r)-ˈmä-mə-tər\

Definition of thermometer

  1. :  an instrument for determining temperature; especially :  one consisting of a glass bulb attached to a fine tube of glass with a numbered scale and containing a liquid (such as mercury or colored alcohol) that is sealed in and rises and falls with changes of temperature

thermometric

play \ˌthər-mə-ˈme-trik\ adjective

thermometrically

play \-tri-k(ə-)lē\ adverb

Recent Examples of thermometer from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'thermometer'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of thermometer

French thermomètre, from Greek thermē heat + French -o- + -mètre -meter — more at therm


THERMOMETER Defined for English Language Learners

thermometer

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noun

Definition of thermometer for English Language Learners

  • : an instrument used for measuring temperature


THERMOMETER Defined for Kids

thermometer

play
noun ther·mom·e·ter \thər-ˈmä-mə-tər, thə-ˈmä-\

Definition of thermometer for Students

  1. :  an instrument for measuring temperature

Word Root of thermometer

The Greek word metron, meaning “measure,” gives us the root metr. Words from the Greek metron have something to do with measuring. A thermometer is an instrument that measures temperature. A diameter is the measurement across the center of a circle. The metric system is a system used for measuring size, weight, and volume. A perimeter is the measurement of the outside of a figure or shape.


Medical Dictionary

thermometer

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noun ther·mom·e·ter \thə(r)-ˈmäm-ət-ər\

Medical Definition of thermometer

  1. :  an instrument for determining temperature that usually consists either of a device providing a digital readout or of a glass bulb attached to a fine tube of glass with a numbered scale and containing a liquid (as mercury or colored alcohol) that is sealed in and rises and falls with changes of temperature



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