What is the meaning of Upgrade?

An upward grade or slope.

An improved component or replacement item, usually applied to technology.

An improvement.

To improve, usually applied to technology, generally by complete replacement of one or more components.

To replace with something better.

To improve the equipment or furnishings of or services rendered to.

To improve in condition or status.

To replace a program with a later version of itself, a version having a higher version number or marketed under a more recent product name.

Up a slope or grade.

inflection of upgraden:

1. first-person singular present indicative
2. (in case of inversion) second-person singular present indicative
3. imperative
4. singular present subjunctive

first-person singular present indicative

(in case of inversion) second-person singular present indicative

imperative

singular present subjunctive

upgrade (modernisation of technology)

an upgrade

Source: wiktionary.org