This is the 11361st most frequent Russian word.
диаметрально
"Диаметрально" means "diametrically" in English, referring to being completely opposite or along a diameter.
Here, 'диаметрально' (diametrically) is used to emphasize the stark opposition or complete difference in viewpoints.
Наша точка зрения на этот вопрос диаметрально противоположна.
Our point of view on this issue is diametrically opposed.
In this sentence, 'диаметрально' (diametrically) indicates that the lines intersect directly across a circle's diameter.
Эти две линии пересекаются диаметрально.
These two lines intersect diametrically.
The word 'диаметрально' (diametrically) here stresses the complete disagreement or total divergence in their opinions.