ق ي س

Probably a shift from ق و س (q-w-s), forms derived from قَوْس (qaws, “bow”), which provided the ancients various opportunities to measure themselves.

ق ي س • (q-y-s)

1. related to measuring

• Form I: قَاسَ (qāsa, “to measure; to analogise”)
  • Verbal noun: قِيَاس (qiyās), قَيْس (qays)
  • Active participle: قَائِس (qāʔis)
  • Passive participle: مَقِيس (maqīs)
• Form II: قَيَّسَ (qayyasa, “to measure”)
  • Verbal noun: تَقْيِيس (taqyīs)
  • Active participle: مُقَيِّس (muqayyis)
  • Passive participle: مُقَيَّس (muqayyas)
• Form III: قَايَسَ (qāyasa, “to compare”)
  • Verbal noun: مُقَايَسَة (muqāyasa), قِيَاس (qiyās)
  • Active participle: مُقَايِس (muqāyis)
  • Passive participle: مُقَايَس (muqāyas)
• Form VIII: اِقْتَاسَ (iqtāsa, “to measure oneself by; to imitate”)
  • Verbal noun: اِقْتِيَاس (iqtiyās)
  • Active participle: مُقْتَاس (muqtās)
  • Passive participle: مُقْتَاس (muqtās)

• قِيَاس (qiyās, “measuring, measurement; analogy”, noun)
• قَيَّاس (qayyās)
• مَقَاس (maqās, “size (of clothes, etc)”, noun)
• مِقْياس (miqyās, “a standard”, noun)
• قِيَاسِيّ (qiyāsiyy, “standard; of acknowledged quality”, adjective)