"frontal" in the noun sense
1. frontlet, frontal
an adornment worn on the forehead
2. frontal
a drapery that covers the front of an altar
3. facade, frontage, frontal
the face or front of a building
"frontal" in the adjective sense
1. frontal
belonging to the front part
"a frontal appendage"
2. frontal
of or relating to the front of an advancing mass of air
"frontal rainfall"
3. frontal, head-on
meeting front to front
"a frontal attack"
"a head-on collision"
4. frontal
of or adjacent to the forehead or frontal bone
"the frontal lobes"
Source: WordNet® (An amazing lexical database of English)
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