ˈbärˌlō noun
Usage: usually capitalized B
Etymology: after Peter Barlow died 1862 English mathematician and optician
: a diverging lens used to increase the magnifying power of a telescope
ˈbärˌlō noun
Usage: usually capitalized B
Etymology: after Peter Barlow died 1862 English mathematician and optician
: a diverging lens used to increase the magnifying power of a telescope
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012