Meaning of AD LIBITUM

Pronunciation:			ad 'libitum
WordNet Dictionary
	Definition:		[adv]  without advance preparation; "he spoke ad lib"
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	Synonyms:		ad lib, impromptu, spontaneously
Webster's 1913 Dictionary
	Definition:		\Ad lib"i*tum\ At one's pleasure; as one wishes.
Biology Dictionary
	Definition:		This Latin term, which is frequently used in medicine, means "at pleasure".