Element for a root unit (from an extensive enumerated list) allowing an optional prefix and power. E.g., mm^2
| Name | Type | Use | Description |
|---|---|---|---|
| powerNumerator | xs:byte | optional | An integer exponent of the unit. |
| prefix | unitsml:prefix | optional | Prefix identifier; e.g., m, k, M, G. [Enumeration order is by prefix magnitude (Y to y) followed by binary prefixes.] |
| sourceURL | xs:anyURI | optional | Relevant URL for available information. |
| unit | unitsml:unit | required | Unit identifier; the enumerated list is basically English unit names in lowercase, with a few upper case exceptions, e.g., 32F, mmHg, pH. |
| Schema version | 3.2.0 |
|---|---|
| Schema location | https://3docx.org/fileadmin/ocx_schema/unitsml/unitsmlSchema_lite-0.9.18.xsd |
| Namespace | urn:oasis:names:tc:unitsml:schema:xsd:UnitsMLSchema_lite-0.9.18 |
| Created | 2026-09-10T10:07:41Z |