ultrasound

As nouns the difference between ultrasound and null

is that ultrasound is (physics) sound with a frequency greater than the upper limit of human hearing; approximately 20 kilohertz while null is zero, nil; the cardinal number before einn.

As a letter s

is the letter s with a.

As a noun ultrasound is

(physics) sound with a frequency greater than the upper limit of human hearing; approximately 20 kilohertz.

As a noun ultrasound

is (physics) sound with a frequency greater than the upper limit of human hearing; approximately 20 kilohertz.

As an adjective false is

(label) one of two states of a boolean variable; logic.

As nouns the difference between radiowaves and ultrasound

is that radiowaves is while ultrasound is (physics) sound with a frequency greater than the upper limit of human hearing; approximately 20 kilohertz.

As a noun ultrasound

is (physics) sound with a frequency greater than the upper limit of human hearing; approximately 20 kilohertz.

As an adjective ultraviolent is

extremely violent.

As a noun ultrasound

is (physics) sound with a frequency greater than the upper limit of human hearing; approximately 20 kilohertz.

As an adjective undefined is

lacking a definition or value.

As a noun ultrasound

is sound with a frequency greater than the upper limit of human hearing; approximately 20 kilohertz.

As an initialism HTTPS is

hypertext Transfer Protocol Secure (HTTP Secure), an encrypted form of information transfer on the Internet.

As nouns the difference between echolocation and ultrasound

is that echolocation is the use of echoes to detect objects as observed in bats and other natural creatures. Also known as biosonar while ultrasound is sound with a frequency greater than the upper limit of human hearing; approximately 20 kilohertz.

As nouns the difference between electrocardiogram and ultrasound

is that electrocardiogram is the visual output that an electrocardiograph produces while ultrasound is sound with a frequency greater than the upper limit of human hearing; approximately 20 kilohertz.

As nouns the difference between ultrasound and sonication

is that ultrasound is sound with a frequency greater than the upper limit of human hearing; approximately 20 kilohertz while sonication is the process of disrupting or homogenizing something, usually a chemical solution or biological medium, with sound waves.