Entries on يسن in 3 Arabic dictionaries by the authors Murtaḍa al-Zabīdī, Tāj al-ʿArūs fī Jawāhir al-Qamūs, Habib Anthony Salmone, An Advanced Learner's Arabic-English Dictionary and Ibn Manẓūr, Lisān al-ʿArab
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يسن
يَسِنَ(n. ac. يَسَن)
a. Was choked by foul air.
يَسَنa. Effluvia, choke-damp.
مِيْسَاْنa. see وَسَنَ
يَسْنَاْنُ