possessive nouns
In the sentence their ids were on the table, should ids be spelled as ids or id's?
1 answer 
Are you talking about "ids" as in identification cards, or "ids" as in the psychological id, ego and super ego?
Identification cards: "Their IDs were on the table." Capitalise "ID" because it's an acronym.
Psychological id: "Their ids were on the table."
Apostrophe-s is used to form a possessive, not to pluralise a word.
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answered Mar 04 '11 at 22:57
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