Englishfor English speakers
AD
Abbreviation
—
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.
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.
on
Preposition
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positioned at the upper surface of, touching from above
The apple is on the table.
—
at the date of
Tim was born on the 4th of July.
—
along, forwards (continuing an action)
drive on, rock on
—
about, dealing with the subject of
I have a book on history.
There was a World Summit on the Information Society a few weeks ago.
—
touching; hanging from
I have no money on me at the moment.
I would like to eat the fruit on the trees.
—
because of, due to
He was arrested on suspicion of bribery.
I contacted Joanne on a hunch that she would know about it.
The stock price increased on news of a new product.
on
Adjective
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If something is on, it is active, functioning or operating.
The television is on.
The lights are on, so it is very bright.
steel
Noun
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A very strong metal made of iron and other substances mixed together.
All my pots for cooking are made of steel.