constrictionKK [kənˋstrɪkʃən] /kənˈstɹɪkʃən/發音con- 共同、一起+strict 拉緊、束縛+-ion 名詞→一起拉緊展開收合con-字首共同、一起strict字根拉緊、束縛-ion字尾名詞字面：一起拉緊四周一起收緊 → 收縮、束縛名詞1收縮、緊縮The constriction of the blood vessels raised his blood pressure.血管收縮使他的血壓升高。2狹窄處、窄縮部位A constriction in the pipe was slowing the water flow.管子有個狹窄處，讓水流變慢。3緊繃感、胸悶She felt a sudden constriction in her throat before speaking.開口前她忽然感到喉嚨一陣緊縮。4限制、束縛Artists often work against the constrictions of a small budget.藝術家常得在低預算的限制下創作。