وَالْعَادِيَاتِ

وَالْعَادِيَاتِ is a phrase (شِبْهُ الجُمْلَةِ) consisting of a particle of pulling down (a preposition) and a genitive noun

PhraseParticle / NounNoun Particle
شِبْهُ الجُمْلَةِجَارٌ وَمَجْرُوْرٌاسْمٌ مَجْرُوْرٌحَرْفُ جَرٍّ
PhraseCompoundGenitive NounParticle of pulling down/Preposition
  
by the chargersوَالْعَادِيَاتِ=الْعَادِيَاتِ+وَ
 by the chargesrsthe the chargers or runnersby
Surah/Below is the only verse in the holy Quran containing the compoundوَالْعَادِيَاتِ
Verse
103-1By the runners, pantingوَالْعَادِيَاتِ ضَبْحًا