first in, first out

adjective

Legal Definition of first in, first out

: being or relating to a method of valuing inventories by which items in the lot first received are assumed to be issued or sold first and requisitions are priced at the cost per item of the oldest lot on hand — compare last in, first out

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“First in, first out.” The Merriam-Webster.com Legal Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/legal/first%20in%2C%20first%20out. Accessed 27 January 2020.

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