In this article. A solitary pulmonary nodule (SPN) is a single abnormality in the lung that is smaller than 3 cm in diameter. Generally, a pulmonary nodule must grow to at least 1 cm in diameter before it can be seen on a chest X-ray.
The name Mu is of Chinese origin. The meaning of Mu is wood. Mu is used as both a boys and girls name. It consists of 2 letters and 1 syllable and is pronounced Mu.
In metric units, M means mega which means million. You may see the notation Nm3/s which is a metric (SI) unit for Normal m3/s. Normal is the same as standard or base, which can be confused with Newton (unit of force) since both have the same abbreviation.