高血压
gāoxiěyā · HSK 7
pressure
🩸 高血压 = high + blood + pressure
Three-character compound: 高 (gāo, high) + 血 (xiě/xuè, blood) + 压 (yā, press/pressure). The 压 component carries 土 (earth) under 厂, hinting at weight pressing down — the literal sense of pressure.
高 — pictograph of a tall building/tower
高 is a pictograph of a tall structure, likely a watchtower or multi-story gate, with a roof on top, an upper chamber, and a base below. From this concrete image of height it extended to the general meanings 'tall,' 'high,' and figuratively 'lofty' or 'noble.'
血 — drop 丿 over dish 皿
Originally a pictograph of a sacrificial vessel (皿) with a drop of blood inside, marking the offering of blood in ancient rituals. The small stroke on top represents the blood itself. Over time it broadened from ritual blood to blood in general.
压 — 厂 (cliff) + 土 (earth) below
压 is the simplified form of 壓. The original character combined 厭 (phonetic, suggesting 'yā') with 土 (earth) to mean pressing or weighing down on the ground. The modern simplified form keeps 厂 (a cliff or overhang) above 土, visually evoking earth being pressed under a heavy mass.