— geyseral, geyseric , adj.
/guy"zeuhr, -seuhr/ for 1, 3; /gee"zeuhr/ for 2 , n.
1. a hot spring that intermittently sends up fountainlike jets of water and steam into the air.
2. Brit. Informal. a hot-water heater, as for a bath.
v.i.
3. to spew forth as or like a geyser: the kettle geysering all over the stove.
[ 1755-65; Geysir name of a hot spring in Iceland, lit., gusher, deriv. of geysa to gush ]