ˌpenə.ˈtraməd.ə(r) noun
Etymology: penetra tion + -meter
: a device for measuring the penetrating power of X rays or other radiation by comparing transmission through different absorbers — called also penetrometer
ˌpenə.ˈtraməd.ə(r) noun
Etymology: penetra tion + -meter
: a device for measuring the penetrating power of X rays or other radiation by comparing transmission through different absorbers — called also penetrometer
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012