Term: ultrasound: very high frequency sound; used in ultrasonography
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: period piece: any work of art whose special value lies in its evocation of a historical period
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: dancing partner: one of a pair of people who dance together
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: spotted salamander: glossy black North American salamander with yellow spots
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: upper respiratory infection: infection of the upper respiratory tract
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: indexing: the act of classifying and providing an index in order to make items easier to retrieve
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: palatopharyngoplasty: surgical resection of unnecessary palatal and oropharyngeal tissue to open the airway; intended to cure extreme cases of snoring (with or without sleep apnea)
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: cod oil: an inferior cod-liver oil that is used in leather manufacturing
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: angoumois moth: small moth whose larvae feed on kernels of stored grains
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: macedoine: mixed diced fruits or vegetables; hot or cold
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: jewels-of-opar: erect plant with tuberous roots and terminal panicles of red to yellow flowers; southwestern North America to Central America; widely introduced elsewhere