Irregular menstruation is when the length of the cycle is more than 35 days, or if the duration varies. A period, or menstruation, is the part of the menstrual cycle in which the endometrium, which is the lining of the uterus, is shed. This appears as bleeding from the womb that is released through the vagina.
1 There is no universally agreed symbol for the cubic foot/feet. 2  Various abbreviations are used, dependent on context, including (but not exclusively) cubic ft, cu ft, cb ft, cbf, ft3, foot3, feetÂ³, ftÂ³.  The cubic foot is used mainly in the United States, Canada and the United Kingdom as a measurement of volume.
cubic foot, cu ft(noun) the volume equal to a cube one foot on each side. cubic foot(Noun) A measure of volume or capacity equivalent to that of a cube having unit dimension of one foot; equals 28.32 litres. Cubic foot. The term cubic foot is an Imperial and US customary unit of volume, used in the United States and the United Kingdom.