a. - Pertaining to or containing, ozone.
P () the sixteenth letter of the English alphabet, is a nonvocal
consonant whose form and value come from the Latin, into which language
the letter was brought, through the ancient Greek, from the Phoenician,
its probable origin being Egyptian. Etymologically P is most closely
related to b, f, and v; as hobble, hopple; father, paternal; recipient,
receive. See B, F, and M.