I suspect that this is the term that Insurances use to clarify their terms and conditions and by explaining what they mean by those terms.
Looking up MY Car Insurance Policy, it gives the HEADING as 'DEFINITIONS'. Then it goes on to explain each term, such as:-
Accidental Damage:-........Loss or damage to your vehicle and.........
Administrative Fee:-........ ( explaining what is....)
Endorsements:-......... An extension or restriction to your Policy "
Excess:-..........The first amount of any claim............
Family:-..............
Certificate of Insurance:- Evidence that you have motor Insurance as
required by Law
Medical Emergency:- (explains what M.E, is)

and so on ......

policy definitions - Insurance Glossary | IRMI.com
https://www.irmi.com/online/insurance-glossary/.../policy-de...
policy definitions - In defining the scope of coverage, insurance policies rely on
I suspect this is asking for the General Term used by insurances ion clarifying some of their special terms and conditions.

terms and phrases that have very special and often very specific meanings.
Insurance policy - Wikipedia, the free encyclopedia
https://en.wikipedia.org/wiki/Insurance_policy
In insurance, the insurance policy is a contract between the insurer and the insured, known as ...*** Definitions - define important terms used in the policy language.*** Insuring agreement - describes the covered perils, or risks assumed, or nature of ...



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Note added at 21 hrs (2016-04-24 16:44:51 GMT)
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TYPO.
above sites had been mixed up. See below...

policy definitions - Insurance Glossary | IRMI.com
https://www.irmi.com/online/insurance-glossary/.../policy-de...
policy definitions - In defining the scope of coverage, insurance policies rely on terms and phrases that have very special and often very specific meanings.
Insurance policy - Wikipedia, the free encyclopedia
https://en.wikipedia.org/wiki/Insurance_policy
In insurance, the insurance policy is a contract between the insurer and the insured, known as .... Definitions - define important terms used in the policy language. Insuring agreement - describes the covered perils, or risks assumed, or nature of ...
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Note added at 21 hrs (2016-04-24 16:47:10 GMT)
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Definitions - define important terms used in the policy language.

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Note added at 21 hrs (2016-04-24 16:50:56 GMT)
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policy definitions

In defining the scope of coverage, insurance policies rely on terms and phrases that have very special and often very specific meanings. Since these terms and phrases are usually repeated many times in the insurance policy, a single definition of the term or phrase is included in the definitions section of the policy instead of being repeated whenever the term is used. The reader is alerted when a defined term is used in the insurance policy, usually by its placement within quotation marks. Since definitions may have a significant impact on the scope of coverage, they must be carefully reviewed when interpreting the policy's coverage intent. See also Coverage form; Declarations; Exclusion; Insurance policy; Insuring agreement; Policy conditions.