legacy

Etymology

From Middle English legacie, from Old French legacie and Medieval Latin lēgātia, from Latin lēgātum.

noun

1. (law) Money or property bequeathed to someone in a will.
2. Something inherited from a predecessor or the past.
   John Muir left as his legacy an enduring spirit of respect for the environment.
   And judging by how well the progressive and youth-favoured party did, many observers suspect this latest round of legal charges are a response to Future Forward's commitment to undo the legacy of military rule and undertake democratic reforms. 2019-04-06, Caleb Quinley, “Thailand: Anti-military party leader faces sedition charges”, in Al Jazeera, Doha: Al Jazeera, retrieved 2019-04-06
3. (education) The descendant of an alumnus.
   Because she was a legacy, her mother's sorority rushed her.

adj

1. Left over from the past; no longer current.
   They have no idea what occurs in the network or its topology, and all of the services remain dependent on it — a very legacy approach to creating services in the optical network. 2000, International Engineering Consortium, The Emerging Optical Network, page 75
   However, pre-relational DBMS are legacy. 2003, Carlo Zaniolo, Peter C. Lockemann, Marc H. Scholl, Advances in Database Technology - EDBT 2000
   Finally, the organisation ends up with an expensive ERP of which it uses only part because of divergent evolutionary directions and a set of new systems fast becoming legacy. 2006, Anne Gams Steine Asserson, Eduard J. Simons, Enabling Interaction and Quality: Beyond the Hanseatic League, page 118
   There was talk in the past that ERP systems were legacy, lacked the agility and flexibility, and did not support interoperability. 2008, CIO - 15 Feb 2008 Vol. 21, No. 9, page 49
   Because most of these HALs are legacy and only used on aging or outdated hardware, chances are that you do not have any in your lab and must be creative in procuring one from an active user. 2009, Kerrie Meyler, Byron Holt, Greg Ramsey, System Center Configuration Manager (SCCM) 2007 Unleashed
   In practice, there are legacy or mature, domain specific, off the shelf (i.e. software that other software projects can reuse and integrate into their own products) tools that are used regularly by modeleres (e.g., for testing purposes, for communication and collaboration). 2013, Management Association, Software Design and Development