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| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| thermometer (θəˈmɒmɪtə) | |
| —n | |
| clinical thermometer gas thermometer resistance thermometer thermocouple See also pyrometer an instrument used to measure temperature, esp one in which a thin column of liquid, such as mercury, expands and contracts within a graduated sealed tube | |
thermometer ther·mom·e·ter (thər-mŏm'ĭ-tər)
n.
An instrument for measuring temperature.
| thermometer (thər-mŏm'ĭ-tər) Pronunciation Key
An instrument used to measure temperature. There are many types of thermometers; the most common consist of a closed, graduated glass tube in which a liquid expands or contracts as the temperature increases or decreases. Other types of thermometers work by detecting changes in the volume or pressure of an enclosed gas or by registering thermoelectric changes in a conductor (such as a thermistor or thermocouple). |