Discussion Forum

Accreditation and Quality Assurance

, Volume 16, Issue 12, pp 649-651

First online:

Generic division of ‘quantity’ and related terms

  • René DybkaerAffiliated withDepartment of Standardization in Laboratory Medicine, REGION H Frederiksberg Hospital, Copenhagen University Hospital Email author 

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In the slow evolution of the International vocabulary of metrology (VIM), the first concept of ‘quantity’ has now been divided generically into ‘ordinal quantity’ and a coordinate primitive without definition and term. An analysis of the concepts by their characteristics is made, and the nature of inheritance is discussed in response to a recent communication in this journal. A completion of the initiated generic division of ‘quantity’ is suggested, and a neoterm for the sister of ‘ordinal quantity’ is offered on the basis of two proposals.


Characteristic Generic division Quantity Term Unitary quantity