"Subhan Allah" is also defined concisely in among the most well-trusted Hadith sources - namely,
Subḥana’llāh (Arabic: سبحان الله) is an Arabic phrase often translated as "Glorious is God".
There is a part of the word that is unpronounced, which is the way that it is used in the Quran, and translates to "void of all evil". For example it says; "SubhanAllahi ammaa yasifoon 37:159 - Void/Free is Allah from that (evil) which they ascribe (to Him)" and "SubhanAllah ammaa yushrikoon" 52:43 - Free is God from what they associate with him."
It is also often cited during the Islamic prayer (salat), or during the sermon (khutba) in the Mosques.
The statement of "Subhan'Allah" testifies one's removing any anthropomorphic elements or associations with God, as al-Razi says in his Mukhtar al-Sihah, (تنزيه tanziyh). "SubhanAllah meaning is Glory be to Allah"
It seems that the Christian counterpart is "Hallowed be your name" in the Bible, Matthew 6:9.
قُلْ هَـذِهِ سَبِيلِي أَدْعُو إِلَى اللّهِ عَلَى بَصِيرَةٍ أَنَاْ وَمَنِ اتَّبَعَنِي وَسُبْحَانَ اللّهِ وَمَا أَنَاْ مِنَ الْمُشْرِكِينَ
Qul hāḏihi sabīl-ī ʾadʿū ʾilā l-lāhi ʿalā baṣīratin ʾanā wa-mani ttabaʿa-nī wa-subḥāna llāhi wa-mā ʾanā mina l-mušrikīna
12:108 Say, "This is my way; I invite to Allah with insight, I and those who follow me. And exalted is Allah ; and I am not of those who associate others with Him."
The meaning of SubhanAllah is "Glory be to Allah".
قُلْ هَـذِهِ سَبِيلِي أَدْعُو إِلَى اللّهِ عَلَى بَصِيرَةٍ أَنَاْ وَمَنِ اتَّبَعَنِي وَسُبْحَانَ اللّهِ وَمَا أَنَاْ مِنَ الْمُشْرِكِينَ Say, "This is my way; I invite to Allah with insight, I and those who follow me. And exalted is Allah ; and I am not of those who associate others with Him." Al-Quran 12:108
فَلَمَّا جَاءهَا نُودِيَ أَن بُورِكَ مَن فِي النَّارِ وَمَنْ حَوْلَهَا وَسُبْحَانَ اللَّهِ رَبِّ الْعَالَمِينَ But when he came to the (fire), a voice was heard: "Blessed are those in the fire and those around: and glory to Allah, the Lord of the worlds. Al-Quran 27:8
Subhan'Allah is also part of the tasbeeh which is read 33 times. It is said as a way to gain rewards and become closer to Allah.