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aqueo-igneous
aqueo-igneous adj. 
/ˌakwɪəʊˈɪɡnɪəs/, /ˌækwioʊˈɪɡniəs/ of, pertaining to, or resulting from the joint action of heat and water.
Brit. /ˌeɪkwɪəʊˈɪɡnɪəs/
, /ˌeɪkwɪəʊˈɪɡnɪəs//ˌakwɪəʊˈɪɡnɪəs/U.S. /ˌeɪkwioʊˈɪɡniəs/
, /ˌeɪkwioʊˈɪɡniəs//ˌækwioʊˈɪɡniəs/ΘΚΠ
the world > matter > liquid > water > [adjective] > resulting from action of water and heat
aqueo-igneous1880
the world > matter > properties of materials > temperature > heat > [adjective] > and water or moisture
aqueo-igneous1880
hygrothermal1895
1880 J. D. Dana Man. Geol. (ed. 3) v. 744 The view that the fusion of lavas is due to the combined action of moisture and heat, or is aqueo-igneous, was early presented by Scrope.
1920 Discovery Apr. 110/1 The earth's surface was originally in a state of aqueo-igneous fusion.
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