functional vs running what difference

English

function +‎ -al

Pronunciation

• IPA(key): /ˈfʌŋk(t)ʃənəl/, /ˈfʌŋk(t)ʃnəl/

functional (comparative more functional, superlative most functional)

1. In good working order.
2. Useful; serving a purpose, fulfilling a function
That sculpture is not merely artistic, but also functional: it can be used as a hatrack.
3. Only for functional purposes, notably in architecture
A functional construction element generally must meet higher technical but lower aesthetical requirements
4. (computing theory) Having semantics defined purely in terms of mathematical functions, without side-effects.
• Antonym: imperative, Synonym: pure
5. (medicine) Of a disease, such that its symptoms cannot be referred to any appreciable lesion or change of structure; opposed to organic disease, in which the organ itself is affected.

Synonyms

• functioning, working
• utilitarian

Antonyms

• dysfunctional
• non-functional, nonfunctional, unfunctional
• (medicine: not referrable to a change of structure): organic

Noun

functional (plural functionals)

1. (mathematics) A function that takes a function as its argument; More precisely: A function
$y=f(x)$

y
=
f
(
x
)

{\displaystyle y=f(x)}

whose argument

$x$

x

{\displaystyle x}

varies in a space of (real or complex valued) functions and whose value belongs to a monodimensional space. An example is the definite integration of integrable real functions in a real interval.

2. (mathematics, functional analysis) A scalar-valued linear function on a vector space.
3. (computing) An object encapsulating a function pointer (or equivalent).

Derived terms

• functional analysis
• functional analysis diagram
• linear functional