half-hour
noun
a period of 30 minutes
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Units for measuring time
hour
noun
a period of time that consists of 60 minutes. 30 minutes is usually called half an hour, 15 minutes can be called a quarter of an hour, and 45 minutes can be called three-quarters of an hour
millisecond
noun
a unit for measuring extremely short periods of time. There are 1000 milliseconds in a second.
nanosecond
noun
a unit for measuring time. There are one billion (=one thousand million) nanoseconds in a second.
vocal fry
a speech habit in which a speaker lowers their voice at the end of a sentence
BuzzWord ArticleWord of the Day
dray
a type of cart pulled by a horse and used in the past for carrying barrels of beer
Open Dictionary
conflict mineral
a mineral which is mined in a place where there is armed conflict, and sold to help pay for weapons
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