the normal brainwave in the encephalogram of a person who is awake and alert; occurs with a frequency between 12 and 30 hertz
the basic rhythmic unit in a piece of music
recurring at regular intervals
an interval during which a recurring sequence of events occurs
natural family planning in which ovulation is assumed to occur 14 days before the onset of a period (the fertile period would be assumed to extend from day 10 through day 18 of her cycle)
the 2nd letter of the Greek alphabet
second in order of importance
beets
preliminary or testing stage of a software or hardware product
