empirical formula


noun Chemistry.

a chemical formula indicating the elements of a compound and their relative proportions, as (CH2O)n.

Nearby words

  1. empire state of the south,
  2. empire-builder,
  3. empiric,
  4. empiric risk,
  5. empirical,
  6. empirically,
  7. empiricism,
  8. empiricist,
  9. empirin,
  10. empirism


Origin of empirical formula

First recorded in 1820–30

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019


British Dictionary definitions for empirical formula

empirical formula

noun

a chemical formula indicating the proportion of each element present in a moleculeC 6 H 12 O 6 is the molecular formula of sucrose whereas CH 2 O is its empirical formula Compare molecular formula, structural formula
a formula or expression obtained from experimental data rather than theory
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for empirical formula

empirical formula

n.

A chemical formula that indicates the relative proportions of the elements in a molecule rather than the actual number of atoms of the elements.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for empirical formula

empirical formula

A chemical formula that indicates the relative proportions of the elements in a molecule rather than the actual number of atoms of the elements. The empirical formula of a compound may be simpler than its molecular formula, which is a multiple of the empirical formula. For example, glucose has the molecular formula C6H12O6 but the empirical formula CH2O. Compare molecular formula structural formula.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.