lithos, stone: lithia, lithograph.
luō, I loose; lusis, a loosing: ana-lyze, dia-lysis, paralytic, (palsy is a contraction of paralysis).
Mania, madness: mania, maniac, Anglo-mania.
math-, learn; mathēma, learning: mathematics, philo-math, poly-math.
martus (martur-), a witness: martyr.
mega (megal-), large; as a prefix: mega-cephalous (kephalē, head), megalithic, megaphone.
melas (melan-), black: melancholy.
melos, song: mel-ody (ōdē).
metron, a measure: metre, symmetry, diameter, geometric.