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.
id
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noun
(psychoanalysis) primitive instincts and energies underlying all psychic activity
ID
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noun
(= I.D.)
a card or badge used to identify the bearer
you had to show your ID in order to get in
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noun
(= Idaho)
a state in the Rocky Mountains