Torridonian

== English == === Etymology === From an ellipsis of Torridon (Sandstone) (named after Loch Torridon, from Scottish Gaelic Loch Thoirbheartan) + -ian. === Pronunciation === (Received Pronunciation) IPA(key): /ˌtɔːɹiˈdəʊ.ni.ən/ (General American) IPA(key): /ˌtɔɹiˈdoʊ.ni.ən/ Rhymes: -əʊniən === Proper noun === Torridonian (geology) A series of Mesoproterozoic to Neoproterozoic arenaceous and argillaceous sedimentary rocks which occur extensively in the Northwest Highlands of Scotland.