What does Idgham mean?

Islam > Glossary > Idgham

Discover the meaning of the term Idgham (إدغام) in Islamic vocabulary.

Updated on 11 April 2026 at 1:05 AM

📖 3 min read

Definition Idgham

Idgham according to Kitab at-Ta'rifat (Al-Jurjani)

Lexically: entering a thing into a thing; said: I idgham’d the clothes into the vessel entering them therein. In morphology’s art: muting the first letter and merging it into the second; the first called adghama, the second adghama fiha. Said: letting the letter in its articulation point the span of two letters, as madd and ’add.

Idgham according to Dustur al-'Ulama (Al-Ahmadnagari)

Lexically: entering a thing into a thing; said: I idgham’d the garment in the vessel putting it therein, and idgham’d the bit in the horse putting it in its mouth. In morphology’s art: coming with two letters, first silent, second voiced, of one articulation point without separation. In ach-Chafiya: idgham is coming with two letters, silent then voiced, of one articulation point without separation. He said two letters for idgham conceivable only in two; the first’s muteness needed for its joining the second: voiced, a transition interposes and it joins not. The second must too be voiced, manifesting the first: the silent letter as the dead, not showing itself, how show another? He said « then voiced » with fa, not waw, signaling interval’s absence, and ordering’s knowing. His word « of one articulation point » guards against cases like f-l-s. His word « without separation » guards against cases like r-b-r-b. Idgham is between identical or differing letters, of one articulation point or two near, but after becoming identical that idgham be possible, as dhb and ’abadtou, labtou, the root dhabba, ’abadta, labithta. Said: letting the letter in its articulation point the span of two letters, as madd and wa’ad.

Idgham according to Mu'jam al-Mustalahat al-Fiqhiyya

Lexically: entering a thing into a thing; said: I entered the bit into the horse’s mouth, that is, put it there. As a term: muting the first letter and merging it into the second; the first adghama, the second adghama fiha.

Idgham according to Maqalid al-'Ulum (As-Suyuti)

Coming with two letters, silent then voiced, of one articulation point, without separation.

Idgham according to At-Tawqif (Al-Munawi)

Lexically entering a thing into a thing; by usage muting the first letter and merging it into the second; the first adghama, the second adghama fiha.

Related terms: Idgham

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