An occupational therapist works with a client to help them achieve a fulfilled and satisfied state in life through the use of purposeful activity or interventions designed to achieve functional outcomes which promote health, prevent injury or disability and which develop, improve, sustain or restore the highest possible level of independence..
Wiktionary (0.00 / 0 votes) Rate this definition: functionality (Noun) The ability to perform a task or function; that set of functions that something is able or equipped to perform. functionality (Noun)
In software engineering (and systems engineering), a functional requirement defines a function of a system and its components. typical functional requirement will contain a unique name and number, a brief summary, and a rationale. This information is used to help the reader understand why the requirement is needed, and to track the requirement through the development of the system.