[1] : WordNet (r) 2.0

harmonic mean
     n : the mean of n numbers expressed as the reciprocal of the
         arithmetic mean of the reciprocals of the numbers

Harmonic Mean >> H Words
Harmonic Mean, definition of term: Harmonic Mean
harmonic+mean_pag1.html

Mean >> M Words
Mean, definition of term: Mean
mean_pag1.html

Harmonic >> H Words
Harmonic, definition of term: Harmonic
harmonic_pag1.html

Mean Time >> M Words
Mean Time, definition of term: Mean Time
mean+time_pag1.html

Harmonic Progre >> H Words
Harmonic Progre, definition of term: Harmonic Progre
harmonic+progre_pag1.html

Geometric Mean >> G Words
Geometric Mean, definition of term: Geometric Mean
geometric+mean_pag1.html

Golden Mean >> G Words
Golden Mean, definition of term: Golden Mean
golden+mean_pag1.html

Greenwich Mean >> G Words
Greenwich Mean, definition of term: Greenwich Mean
greenwich+mean_pag1.html

Mean Solar Time >> M Words
Mean Solar Time, definition of term: Mean Solar Time
mean+solar+time_pag1.html