(FYOO.chur. Proof) adj. Describes a technology with traits or features that allegedly enable it to avoid becoming obsolete. Also: futureproof, future proof.

Example Citation:
Just a few years ago, long-distance carriers and private operators dug up the whole country, congested metropolitan areas and countryside alike, to string 25 million miles of optical fiber to meet the demand for bandwidth long into the future. Quite surprisingly, these 'future-proof' fiber-optic networks are already becoming exhausted.
—James M. True, "Dense WDM alleviates Net congestion," Electronic Engineering Times, December 1, 1997

Earliest Citation:
Heralding it as the first fourth-generation computer, Tycom Corp. has introduced an Intel Corp. 8088-based multiuser system here that has a performance range extending from a mid-range microcomputer to a high-end minicomputer.

Described by some observers of the London computer scene as "future proof," Microframe contains a vendor-developed bus architecture called Versatile Base Bus Connect (VBC) that enables its chassis, which is available in 6-, 12- and 22-slot versions, to accommodate Zilog, Inc. Z80, Motorola, Inc. 68000 and Digital Equipment Corp. PDP-11/70 board-level upgrades.
—"Tycom Offers 8088-Based System," Computerworld, February 7, 1983

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