The property glossary

What the glossary is

The glossary is a searchable list of every property the platform stores: 81 of them, in 14 functionality groups. It is public and needs no account, so anyone deciding whether to trust a dataset built here can read the definitions it was built with.

You can find it at /glossary. Its entries come from the vocabulary the platform itself uses, so it never describes a property the platform does not have.

How to read an entry

An entry answers four questions: what the property is, what other names papers give it, which units may be reported for it, and what must be true before two values can be compared.

• Definition: what is measured, stated precisely enough to place a borderline case.
• Also written: the spellings recognised on import and during extraction. Each is another name for the same thing, never a related but different quantity.
• Accepted source units: the unit spellings accepted for the property. A unit not on the list is flagged, not altered.
• Canonical unit: what standardisation converts to. Where there is no agreed definition, the entry says "Method-dependent — source unit and basis preserved" and the reported unit and basis are kept.
• Basis and method: the denominator, the procedure or the instrument setting without which values are not comparable.

What the glossary does not tell you

It does not say which properties your project collects; that is set in the study configuration. It does not say which need a person before approval. And it is not a conversion table: whether a particular conversion is allowed is decided when the value is converted, following the unit rules.