##### Wiktionary

**empirical formulas**

n. (empirical formula English)

#### Usage examples of "empirical formulas".

They even have a mathematics for it, with __empirical formulas__ and symbols for “.

Biomechanicians have worked out complex __empirical formulas__ describing body deterioration and the measures which must be taken to offset it under various conditions of impressed acceleration, ambient temperature, the drugs used, and other factors such as metabolic age, body mass, sex, and so forth.