名詞 ph:

1. (from potential of Hydrogen) the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter; provides a measure on a scale from 0 to 14 of the acidity or alkalinity of a solution (where 7 is neutral and greater than 7 is more basic and less than 7 is more acidic);
   同義詞：pH scale

1. That word is spelt with a PH, not an F.
   那個字里的f音拼作PH而不是F。

pH

n.Chemistry （名詞）【化學(xué)】
A measure of the acidity or alkalinity of a solution, numerically equal to 7 for neutral solutions, increasing with increasing alkalinity and decreasing with increasing acidity. The pH scale commonly in use ranges from 0 to 4.
酸堿度：溶液酸性或堿性的度量，數(shù)值等于7的為中性溶液，數(shù)值增大表示堿性增大，數(shù)值減小表示酸性的增大。PH值范圍一般在0到4之間

來源：
p(otential of) h(ydrogen)
p(otential of) h(ydrogen)