syn·​a·​del·​phite | \ ˌsinəˈdelˌfīt \
plural -s

Definition of synadelphite

: a mineral (Mn,Mg,Ca,Pb)(AsO4)(OH)5 composed of a basic arsenate of manganese often with other elements (such as magnesium, calcium, lead) and occurring in black prismatic crystals and grains (hardness 4.5, specific gravity 3.5)

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History and Etymology for synadelphite

German synadelphit, from Greek synadelphos one that has a brother or sister (from syn- + adelphos brother) + German -it -ite

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Cite this Entry

“Synadelphite.” Dictionary, Merriam-Webster, Accessed 23 Nov. 2020.

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