From the root ط ح ل ب (ṭ-ḥ-l-b) meaning "to be overspread with green", related to ط ح ل (ṭ-ḥ-l) meaning "to be dingy or dusky", "to be greenish-grey", "to be turbid or murky".
طُحْلُب • (ṭuḥlub) f (plural طَحَالِب (ṭaḥālib))
| Singular | basic singular triptote | ||
|---|---|---|---|
| Indefinite | Definite | Construct | |
| Informal | طُحْلُب ṭuḥlub |
الطُّحْلُب aṭ-ṭuḥlub |
طُحْلُب ṭuḥlub |
| Nominative | طُحْلُبٌ ṭuḥlubun |
الطُّحْلُبُ aṭ-ṭuḥlubu |
طُحْلُبُ ṭuḥlubu |
| Accusative | طُحْلُبًا ṭuḥluban |
الطُّحْلُبَ aṭ-ṭuḥluba |
طُحْلُبَ ṭuḥluba |
| Genitive | طُحْلُبٍ ṭuḥlubin |
الطُّحْلُبِ aṭ-ṭuḥlubi |
طُحْلُبِ ṭuḥlubi |
| Dual | Indefinite | Definite | Construct |
| Informal | طُحْلُبَيْن ṭuḥlubayn |
الطُّحْلُبَيْن aṭ-ṭuḥlubayn |
طُحْلُبَيْ ṭuḥlubay |
| Nominative | طُحْلُبَانِ ṭuḥlubāni |
الطُّحْلُبَانِ aṭ-ṭuḥlubāni |
طُحْلُبَا ṭuḥlubā |
| Accusative | طُحْلُبَيْنِ ṭuḥlubayni |
الطُّحْلُبَيْنِ aṭ-ṭuḥlubayni |
طُحْلُبَيْ ṭuḥlubay |
| Genitive | طُحْلُبَيْنِ ṭuḥlubayni |
الطُّحْلُبَيْنِ aṭ-ṭuḥlubayni |
طُحْلُبَيْ ṭuḥlubay |
| Plural | basic broken plural diptote | ||
| Indefinite | Definite | Construct | |
| Informal | طَحَالِب ṭaḥālib |
الطَّحَالِب aṭ-ṭaḥālib |
طَحَالِب ṭaḥālib |
| Nominative | طَحَالِبُ ṭaḥālibu |
الطَّحَالِبُ aṭ-ṭaḥālibu |
طَحَالِبُ ṭaḥālibu |
| Accusative | طَحَالِبَ ṭaḥāliba |
الطَّحَالِبَ aṭ-ṭaḥāliba |
طَحَالِبَ ṭaḥāliba |
| Genitive | طَحَالِبَ ṭaḥāliba |
الطَّحَالِبِ aṭ-ṭaḥālibi |
طَحَالِبِ ṭaḥālibi |