WordReference Random House Unabridged Dictionary of American English © 2026
neph•e•lom•e•ter
(nef′ə lom′i tər),USA pronunciation n.
neph•e•lo•met•ric
(nef′ə lə me′trik),USA pronunciation neph′e•lo•met′ri•cal, adj.
neph′e•lo•met′ri•cal•ly, adv.
neph′e•lom′e•try, n.
- Microbiology[Bacteriol.]an apparatus containing a series of barium chloride standards used to determine the number of bacteria in a suspension.
- Chemistry[Physical Chem.]an instrument for studying the density of suspended particles in a liquid by measuring the degree to which the suspension scatters light.
- see nebula) + -o- + -meter 1880–85; nephel- (combining form representing Greek nephélē cloud
neph′e•lom′e•try, n.