珪藻[keisou] diatom
珪藻土[keisoudo] diatomaceous soil
二酸化珪素[nisankakeiso] silicon dioxide (SiO2)
珪素[keiso] silicon (Si)
珪酸[keisan] silicic acid

珪砂[keisha] silica sand
珪石[keiseki] silica
珪性肺塵症[keiseihaijinshou] pneumonoultramicroscopicsilicovolcanoconiosis
珪素鋼[keisokou] silicon steel
珪素樹脂[keisojushi] silicone resin

アクリル酸[akurirusan] acrylic acid
アミノ酸[aminosan] amino acid
アルギン酸[aruginsan] alginic acid
イノシン酸[inoshinsan] inosinic acid
リノール酸[rinoorusan] linoleic acid

燐酸[rinsan] phosphoric acid (H3PO4)
亜硝酸[ashousan] nitrous acid
亜硝酸塩[ashousanen] nitrite
亜硫酸[aryuusan] sulfurous acid
亜硫酸塩[aryuusanen] sulfite