【医】 methylbenzethonium
methyl
【化】 methyl; methylic
【医】 Me.; methyl; methyl group; methylium
armour; first; nail; shell
【医】 carapace; concha; conchae; helo-; nail; onycho-; onyx
second
【建】 acetonitrile; ethane nitrile
oxygen
【医】 o; O2; oxy-; oxygen; oxygenium; phlogisticated gas
ammonium
【化】 ammonium
【医】 ammonio-; ammonium