Definition of lumbar puncture. : puncture of the subarachnoid space in the lumbar region of the spinal cord to withdraw cerebrospinal fluid or inject anesthetic drugs.
Rational Numbers A rational number is a number that can be written as a ratio. That means it can be written as a fraction, in which both the numerator (the number on top) and the denominator (the number on the bottom) are whole numbers. The number 8 is a rational number because it can be written as the fraction 8/1.
That is it has an infinite decimal places as the value of pi is no finite. Since the pi is an infinite number (after decimal) or the value after the decimal is non â terminating (that means the value has no end), therefore the number 3.14159265 cannot be displayed as a ratio of two integers.et us remind the concept of Rational Numbers. Rational numbers are the Ratio of two different unified integers. Or in other words, we can say that rational numbers are simply the ratio of two numbers with no common factor in them.