: containing water usually in chemical association (as in hydrates)
Examples of hydrous in a Sentence
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The dominant hydrous mineral in mare basalts—apatite and entrapped melt hosted by olivine and ilmenite—were carefully characterized using scanning electron microscopy (Extended Data Fig. 1 and Supplementary Figs. 1–3) for further in situ chemical and isotopic analysis of water.
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Keith Cooper, Space.com, 16 July 2025
Wad, perhaps the most abundant, is a dark-brown-to-black, very soft, earthy mineral that is commonly considered an impure hydrous oxide of manganese.
—arkansasonline.com, 30 Nov. 2024
Secondly, there is no indication in the paper about the ratio and timing of these two magmas - hydrous and anhydrous.
—Erik Klemetti, Discover Magazine, 11 Oct. 2010
When water interacts with rock, chemical weathering forms clays and other hydrous minerals that contain water as part of their mineral structure.
—Mike Wehner, BGR, 16 Mar. 2021
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Keith Cooper, Space.com, 16 July 2025
Wad, perhaps the most abundant, is a dark-brown-to-black, very soft, earthy mineral that is commonly considered an impure hydrous oxide of manganese.
—arkansasonline.com, 30 Nov. 2024
Secondly, there is no indication in the paper about the ratio and timing of these two magmas - hydrous and anhydrous.
—Erik Klemetti, Discover Magazine, 11 Oct. 2010
When water interacts with rock, chemical weathering forms clays and other hydrous minerals that contain water as part of their mineral structure.
—Mike Wehner, BGR, 16 Mar. 2021
Cite this Entry
“Hydrous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrous. Accessed 29 Jul. 2025.
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