birnessite

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. {{lb|en|mineral}} A soft [[mineral]], mostly containing [[manganese]] [[oxide]]s, that occurs in [[manganese nodule]]s.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.