【化】 tetraheptoxy-silicane
four
【医】 quadri-; Quat; quattuor; tetra-
age
oxygen
【医】 o; O2; oxy-; oxygen; oxygenium; phlogisticated gas
base; basic; foundation; key; primary; radix
【化】 group; radical
【医】 base; basement; group; radical
silicon
【医】 Si; silicium; silicon