1. bolt-on - Noun
2. bolt-on - Adjective
(also figuratively) An accessory that can be bolted on or otherwise attached.
(figuratively) A functionality or service that can be added to an existing arrangement or plan (for example, a mobile telephone subscription).
Of an accessory: capable of being bolted on or otherwise attached.
(figuratively, computing) Used to extend an existing system, operating as an add-on or plug-in.
Source: en.wiktionary.orgIn medicine, you learn about ethics from day one. In mathematics, it's a bolt-on at best. It has to be there from day one and at the forefront of your mind in every step you take. Hannah Fry
After-market necks made entirely from carbon fiber fit existing bolt-on instruments. Source: Internet
A U.S. Marine Corps M1123 HMMWV in 2004, equipped with a bolt-on MAK armor kit. Source: Internet
Its off-peak unlimited data bolt-on services, which offer unmetered data usage between 23:00 and 18:00, will also be used more during lockdown. Source: Internet
As an analytics product builder, I cringe whenever an enterprise buys yet another analytics bolt-on product. Source: Internet
Evolved EDGE Evolved EDGE, also called EDGE Evolution, is a bolt-on extension to the GSM mobile telephony standard, which improves on EDGE in a number of ways. Source: Internet