氕

piēdictionary entry

protium 1H / light hydrogen, the most common isotope of hydrogen, having no neutron, so atomic weight 1

Sources & editorial notes

Reference definitions: CC-CEDICT contributors and MDBG, CC BY-SA 4.0. Source release 2026-10-27T01:55:52Z. Imported 2026-10-27. Definition wording and meaning order are retained. Recognized pronunciation references are displayed with tone marks; the original source record is available below.

Source record: cd-031abd3988fa540d. Source SHA-256: bbc4b27f26bee1a262f4d7939667a040c7857c7fc0200a2fa7a86d3352a09eae.

Original source entry:

氕氕 [pie1] /protium 1H/light hydrogen, the most common isotope of hydrogen, having no neutron, so atomic weight 1/

Reference definitions and teaching material have separate provenance.

Reference information

The definitions above are from CC-CEDICT. Examples and usage notes are available on selected entries.

Reference definitions from CC-CEDICT.