just-in-time
UK[ˌdʒʌst ɪn ˈtaɪm]US[ˌdʒʌst ɪn ˈtaɪm]
adj
Relating to a manufacturing or supply-chain system in which materials or components are delivered or produced exactly when they are needed in the production process, thereby minimizing inventory costs.
adj
Happening or provided at the very last possible moment before it is needed.
Morpheme Breakdown
just
in
time
just
exactly
in
within
time
a period
Etymology
The phrase "just-in-time" is a modern English compound, originating in the mid-20th century within the context of industrial engineering and management, notably from the Toyota Production System in Japan. It is formed from common English words: "just," implying precision and exactness; "in," denoting a state or condition; and "time," the fundamental dimension of scheduling. The logic is transparent and literal, describing a system where components arrive precisely within the required timeframe, evolving from a simple descriptive phrase into a formalized technical term for an inventory strategy. Its conceptual power lies in applying the everyday meaning of "at the exact right moment" to the complex logistics of manufacturing.
Analysis
Structure: just (exactly) + in (within) + time (a period)
- just: From Latin iustus (righteous, lawful), via Old French. In this compound, it functions as an adverb meaning "exactly" or "precisely."
- in: From Old English in (in, within, into), of Germanic origin. In this compound, it functions as a preposition indicating a temporal or situational state.
- time: From Old English tīma (a period, season), of Germanic origin. In this compound, it functions as a noun representing the temporal dimension.
Examples
The factory adopted a just-in-time inventory system to reduce warehouse storage costs.
His just-in-time arrival at the platform allowed him to catch the departing train.
The software update was a just-in-time fix for the critical security vulnerability.