requirement

Necessary, inescapable, and non-negotiable, a requirement is something that must be done, like the dishes. Speaking politely to your grandparents may be a requirement of living in your parents' house.

Requirements can be imposed by an authority. For example, in college, it is usually a requirement that you study math, English, and history, before you go on to get your degree in underwater basket weaving. We can also speak of the requirements of a living system: your body requires water to stay alive; light is a requirement of photosynthesis.

Definitions of requirement
1

n required activity

“the requirements of his work affected his health”
Synonyms:
demand
Type of:
duty, obligation, responsibility
the social force that binds you to the courses of action demanded by that force

n anything indispensable

“allow farmers to buy their requirements under favorable conditions”
Synonyms:
essential, necessary, necessity, requisite
Antonyms:
inessential, nonessential
anything that is not essential
Types:
desideratum
something desired as a necessity
must
a necessary or essential thing
need, want
anything that is necessary but lacking
Type of:
thing
a separate and self-contained entity

n something that is required in advance

Synonyms:
prerequisite
Types:
show 4 types...
hide 4 types...
precondition
a condition that is a prerequisite
academic requirement
a requirement for admission to or completion of an academic program
essential condition, sine qua non
a prerequisite
language requirement
a requirement that a student know certain languages
Type of:
duty, obligation, responsibility
the social force that binds you to the courses of action demanded by that force

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