Aurous

Part of speech: adjective

Pronunciation: /ˈɔːɹəs/

Definitions

1. Describing a chemical state of gold, this term denotes substances that contain gold in a +1 oxidation state, indicating a specific valence of the element that is essential in various chemical applications
2. This term relates to a particular oxidation state of gold, identifying compounds that have gold in a +1 charge, commonly recognized in certain chemical reactions and formulations
3. This descriptor refers to a specific oxidation state associated with gold, highlighting compounds that possess a +1 charge, which are relevant in particular chemical contexts

Etymology: "Aurous" is a plain chemical formation: it combines "auro-", the combining form of the Latin "aurum" meaning gold, with the English adjectival suffix "-ous". The suffix is the same one found in words like "ferrous" for iron, and the pattern follows the older chemical naming habit of using -ous for the lower of two oxidation states of an element, with -ic for the higher. So "aurous" describes gold in its +1 state, while "auric" describes the +3 state. The Latin root "aurum" itself is an old word for gold, and its chemical symbol Au comes from the same source, which is why the symbol looks unrelated to the English name "gold." The combining form "auro-" appears in many scientific terms, mostly in chemistry and mineralogy, where it is used to mark gold as the element involved.