tartareous

== English == === Etymology === Compare tartarous. === Pronunciation === (Received Pronunciation) IPA(key): /tɑːˈtɛəɹi.əs/ (General American) IPA(key): /tɑɹˈtɛɹi.əs/ Rhymes: -ɛəɹi.əs === Adjective === tartareous (comparative more tartareous, superlative most tartareous) Consisting of tartar; of the nature of tartar. (botany) Having a rough, crumbly surface.