alcalimètre, n.m., alkalimeter.
alcalin, -e, adj., alkaline.
alcalisation, n., alkalization.
alcaliser, v.a., (chem.) to alkalize.
alcaloïde, n.m., (chem.) alkaloid.
alcantara, n.m., a Spanish military order.
alcarraza, n.m., water-cooler.
alcazar, n.m., alcazar (Moorish palace).
alcée, n.f., hollyhock.
alchimie, n.f., alchemy.