period between successive perigees; approximately 27.5546 days

period between successive perigees; approximately 27.5546 days

period between successive perigees; approximately 27.5546 days

in large part; mainly or chiefly

in large part; mainly or chiefly

to a feasible extent

to a feasible extent

to a feasible extent

a type of serial music introduced by Arnold Schoenberg; uses a tone row formed by the twelve semitones of the chromatic scale (and inverted or backward versions of the row)

a serious form of actinomycosis that affects the abdomen