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hydro-ceramic
hydro-ceramic adj.
Brit. 
/ˌhʌɪdrə(ʊ)sᵻˈramɪk/
, /ˌhʌɪdrə(ʊ)sᵻˈramɪk/U.S. /ˌhaɪdroʊsəˈræmɪk/
designating porous, unglazed pottery used for cooling or filtering./ˌhaɪdroʊsəˈræmɪk/ΘΚΠ
society > occupation and work > materials > derived or manufactured material > clay compositions > baked clay > pottery or ceramics > [adjective] > unglazed
unnealed1568
unglazed1599
bisque1807
hydro-ceramic1883
1883 J. W. Mollett Illustr. Dict. Art & Archæol. 174/1 Hydro-ceramic (vessels), Gr., vessels made of a porous clay, in which liquids were put for the purpose of cooling them; they were a kind of alcarazas.
1940 Chambers's Techn. Dict. 428/2 Hydroceramic, porous unglazed pottery, used for filters and for cooling vessels.
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