The answer is
ICICLE
The top is just
Roman Numerals in order so the letter after X is L.
The middle
Is a well known mathematical formula PI x D (Diameter)= C (circumference)
The bottom
Is the Albert Einstein equation E=mc^2…
The creative thinking
The three vertical lines being Is can can be added in the white circle, and when added on the horizontal line it makes an L… the letters therefore are I,C,E making ICE.