Getty. Much like the rest of your body, your hair goes through changes as you get older. The hair cycle -- rest, shed and grow -- slow downs, and can lead to hair loss, which can be very traumatizing. Your hair changes every seven years, explains women's hair restoration expert Lucinda Ellery. There are 150,000-200,000 hairs on our heads; we actually shed 100 a day, 36,000 in a year on average.
Definitions of yardstick. 1. measuring stick consisting of a strip of wood or metal or plastic with a straight edge that is used for drawing straight lines and measuring lengths.
Princeton's WordNet(1.00 / 1 vote)Rate this definition: 1  yard, pace(noun) a unit of length equal to 3 feet; defined as 91.44 centimeters; originally taken to be the average length of a stride. 2  yard, grounds, curtilage(noun) the enclosed land around a house or other building. it was a small house with almost no yard.