The negative of the logarithm of the OH- ion concentration: pOH = - log [OH

The negative logarithm of the hydroxyl ion concentration. The pOH is related to pH by the expression: pH + pOH = 14. (See pH.)

the negative logarithm of the hydroxide ion concentration ( molarity). (see pH)

Pilot's Operating Handbook (the manufacturer's guide to the airplane)

Pilot's Operating Handbook, in the 'GAMA Specification No. 1' format.

Poh is a tenth month in the Nanakshahi calendar, which govern the activities within Sikhism. This month coincides with December/January of the Western/Gregorian/Julian Calendar and is 30 days long.

path overhead; a group of management communications facilities in SDH

Path over head. Part of the SONET framing structure that provides the SPE with overhead information. See also SPE.

An exclamation expressing contempt or disgust; bah !

Permission of Honor.

Probability Of Hit. Refers to the chance (0 to 100%) that a given round will hit the target at a given range, depending mainly on the gun's Accuracy.

An aircraft's "owner's manual".