WordReference Random House Unabridged Dictionary of American English © 2026
dil•a•tom•e•ter
(dil′ə tom′i tər),USA pronunciation n. [Physics.]
dil•a•to•met•ric
(dil′ə tə me′trik),USA pronunciation adj.
dil′a•to•met′ri•cal•ly, adv.
dil′a•tom′e•try, n.
- Physicsa device for measuring expansion caused by changes in temperature in substances.
- 1880–85; dilate + -o- + -meter
dil′a•tom′e•try, n.