First Known Use: 1794
Dictionary
ad lib
adverb
Definition of AD LIB
1
: in accordance with one's wishes
2
: without restraint or limit
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Origin of AD LIB
New Latin ad libitum
Medical Dictionary
ad lib
adverb \(ˈ)ad-ˈlib\
Medical Definition of AD LIB
: without restraint or imposed limit : as much or as often as is wanted <the animals were given water ad lib—Science>—often used in writing prescriptions
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