subject

US /ˈsʌb.dʒekt/
UK /ˈsʌb.dʒekt/
"subject" picture
1.

a person or thing that is being discussed, described, or dealt with

:
The main subject of the meeting was the new budget.
She changed the subject when he brought up his ex-girlfriend.
2.

an area of knowledge studied in a school, college, or university

:
My favorite subject in high school was history.
She is studying several different subjects at university.
3.

a person or animal that is used in an experiment or study

:
The new drug was tested on human subjects.
The research involved observing the behavior of animal subjects.
4.

a person or thing forming the grammatical subject of a sentence

:
In the sentence 'The cat sat on the mat,' 'the cat' is the subject.
5.

a person or thing that is under the authority or control of another

:
All citizens are subjects of the king.
The conquered people became subjects of the empire.
1.

to cause or force someone or something to undergo a particular experience or be exposed to something

:
The new policy will subject all employees to stricter rules.
He was subjected to intense questioning by the police.
1.

likely to be affected by something

:
The prices are subject to change without notice.
He is subject to fits of rage.