bowing (in prayer)
Masculine verbal noun (maṣdar) of رَكَعَ (to bow). Related: رَاكِعٌ (one who bows), رَكْعَةٌ (unit of prayer - named after the bowing). Plural of rākiʿ: رَاكِعُونَ.
Each unit (rakʿah) of Islamic prayer includes rukūʿ (bowing). The physical act symbolizes humility and submission. During rukūʿ, Muslims say: 'Glory be to my Lord, the Great.'