denoting a quantity consisting of six items or units
a half of an hour
one of two equal parts of a divisible whole
the cardinal number that is the sum of eleven and one
denoting a quantity consisting of 12 items or units
one of two equal parts of a divisible whole
consisting of one of two equivalent parts in value or quantity
a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation
