Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.
EXAMPLES FROM THE WEB FOR P N
Measure the lengths of o m and of p n, and divide the one by the other.
Pass this through the slits (p n in Fig. 425) in the short sides of the box.
Slits are then made in the short side exactly under the long slits, as p n in Fig. 425.