1 Trisomy 13 is a rare condition caused by an extra copy of chromosome 13. 2  Babies with trisomy 13 have many abnormalities, involving nearly every organ system in the body, as well as developmental delay. 3  It is difficult to predict the life expectancy of a baby with trisomy 13.
Freebase(0.00 / 0 votes)Rate this definition: Comparator. In electronics, a comparator is a device that compares two voltages or currents and switches its output to indicate which is larger. They are commonly used in devices such as analog-to-digital converters.
Use comparator in a sentence. 1  any of various instruments, esp. in electronics, for comparing some measurement, as of length, brightness, or voltage, with a fixed standard. 2  Any of various instruments for comparing a measured property of an object, such as its shape, color, or brightness, with a standard.