FIRST IN FIRST OUT as NOUN

1. Meaning
   • inventory accounting in which the oldest items (those first acquired) are assumed to be the first sold
   Synonym(s)
   • FIFO (what does FIFO mean?)
   Hypernyms(s) first in first out is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
   • inventory accounting (what does inventory accounting mean?)