ឥដ្ឋ (Khmer) comes from Pali iṭṭha, from Sanskrit इष्ट, from Proto-Indo-Aryan Hiṣṭás, from Proto-Indo-Iranian Hištás, from Proto-Indo-European h₂is-tós, from Proto-Indo-European h₂eys- — to wish; to request.
ឥដ្ឋ (Khmer): brick