Englishfor English speakers
AD
Abbreviation
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AD is short for the Latin words anno Domini, which means in the year of our Lord. You use AD to refer to a date after the year in which Jesus Christ is believed to have been born.
The Romans started building the Colosseum in 70 AD.
ad
Noun
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A short way of saying advertisement.
I saw an ad in the newspaper for a job at the factory.
group
Noun
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When more than 2 things or people are together, they make a group.
group
Verb
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To put people or things together to make a group.
of
Preposition
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Made using.
It is a house of cards.
scientific
Adjective
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Of, or having to do with science.
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Having the quality of being derived from, or similar to, the scientific method.
expert
Noun
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An expert is a person who knows more, or can do something better, than most people, usually because of special study or practice.
Zidane is an expert at penalty kicks.
The company has hired an expert in computer systems.