13 letter words
ANTILOGARITHM​19
11 letter words
TETRADRACHM​19
COLOGARITHM​19
CRYPTARITHM​23
10 letter words
POLYRHYTHM​26
9 letter words
ALGORITHM​15
LOGARITHM​15
BIORHYTHM​22
8 letter words
DIDRACHM​17
ISARITHM​13
MILLIOHM​15
7 letter words
MICROHM​16
TERAOHM​12
6 letter words
RHYTHM​17
DRACHM​14
MEGOHM​14
5 letter words
ABOHM​12
PASHM​12
4 letter words
FEHM​12
VEHM​12
3 letter words
OHM​8
2 letter words
HM​7