Meaning

noun using the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram); commonly used to observe fetal growth or study bodily organs

originEtymology tree Proto-Indo-European *swenh₂- Proto-Indo-European *swónh₂os Latin sonus English sono- Proto-Indo-European *gerbʰ- Proto-Hellenic *grə́pʰō Ancient Greek γρᾰ́φω (grắphō) Ancient Greek -ᾱ (-ā) Ancient Greek -η (-ē) Ancient Greek γραφή (graphḗ) Ancient Greek -γραφίᾱ (-graphíā)bor. French -graphieder. English -graphy English sonography From sono- + -graphy.

Etymology from Wiktionary, CC BY-SA 3.0