definition of
diametric

[1] #1 diametric a. [diametral, diametrical] related to or along a diameter; "the diametral plane". wn

[2] #2 diametric s. [diametrical, opposite, polar] characterized by opposite extremes; completely opposed; "in diametric contradiction to his claims"; "diametrical (or opposite) points of view"; "opposite meanings"; "extreme and indefensible polar positions". wn