äf|thal(ˌ)mō, ÷äp|th- noun
Etymology: ophthalm- + diastimeter
: an instrument for adjusting the distance between the eyes and lenses (as of spectacles)
äf|thal(ˌ)mō, ÷äp|th- noun
Etymology: ophthalm- + diastimeter
: an instrument for adjusting the distance between the eyes and lenses (as of spectacles)
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012