Mandragore, [318]

Manna, [277], [305]

Manoah, [238], [383]

Marcasite, [335]

Mathematics, [1], [46], [122]

Materia prima, [38], [173], [174]

Matter, [7], [27], [38], [113], [148], [184]

Mazzal (constellation), [164]

Mercury, [164]

Metals, [316]