1. Educ. (as a rating of student performance) passing.
2. Chess. pawn.
3. Electronics. plate.
4. poor.
5. Gram. predicate.
6. Protestant.
Symbol.
1. the 16th in order or in a series, or, when I is omitted, the 15th.
2. ( sometimes l.c. ) the medieval Roman numeral for 400. Cf. Roman numerals .
3. Genetics. parental.
4. Chem. phosphorus.
5. Physics.
a. power.
b. pressure.
c. proton.
d. See space inversion .
e. poise 2 .
6. Biochem. proline.