Apex (Latin for top, peak, summit) may refer to: Biology Apex of the heart, the lowest superficial part of the heart Apex (mollusc), the tip of the spire of the shell of a gastropod Apex's the Apical meristem or its remnant on a flower Apex predator, a predator which sits at the top of a food chain Arrayed Primer Extension (APEX), a genetic resequencing method for rapid identification of mutations Society Apex (headdress), a pointed piece of olive-wood, the base of which was surroun… (More on Apex)