frontal
adj.
"being in front," 1650s, of the forehead; 1971 with reference to the naked standing body; from Modern Latin frontalis, from front-, stem of Latin frons "brow, forehead" (see front, n.). In some uses probably from front, n. + adjectival suffix -al(1).
〔李〕[front;-ala.] a.前面的; 正面的 ←front (F frons)=forehead, foremost part 前额,前部