Possible interpretations and related concepts:
* Frontal perspective: This is a common term in art and architecture, referring to a specific type of perspective where the viewer is positioned directly in front of the subject, with the vanishing point at the center of the picture plane.
* Frontal lobe: This is a part of the brain responsible for many higher-level cognitive functions, including planning, decision-making, and language. In neurology, the term "frontal lobe syndrome" refers to a set of symptoms resulting from damage to the frontal lobe.
* Frontal attack: This is a military term referring to a direct attack on the front lines of an enemy.
If you can provide more context about where you encountered the term "frontalism," I might be able to offer a more specific answer.