WordReference Random House Unabridged Dictionary of American English © 2026
ech•o•graph
(ek′ō graf′, -gräf′),USA pronunciation n.
ech•o•graph•ic
(ek′ō graf′ik),USA pronunciation adj.
ech′o•graph′i•cal•ly, adv.
e•chog•ra•phy
(e kog′rə fē),USA pronunciation n.
- Physicsa device that records oceanic depths by means of sonic waves.
- Medicinea similar device used in ultrasonography to examine internal body structures or monitor fetal development.
- 1945–50; echo + -graph
'echograph' also found in these entries (note: many are not synonyms or translations):