noun, Astronomy, Geology.
a depression in the ground believed to have been caused by a meteorite
Does the earth have impact craters?
- Impacted fetus
impacted fetus n. A fetus that because of its large size or narrowing of the pelvic canal has become wedged and incapable of spontaneous advance or recession.
[im-pak-tid] /ɪmˈpæk tɪd/ adjective 1. tightly or immovably wedged in. 2. Dentistry. noting a tooth so confined in its socket as to be incapable of normal eruption. 3. driven together; tightly packed. 4. densely populated or crowded; overcrowded: an impacted school district. [noun im-pakt; verb im-pakt] /noun ˈɪm pækt; verb ɪmˈpækt/ noun 1. the striking […]
- Impacted fracture
impacted fracture n. A bone fracture in which one of the fragments is driven into another fragment.
[im-pak-ter] /ɪmˈpæk tər/ noun 1. a person or thing that . 2. .