From Ottoman Turkish فوران (feverân), from Arabic فَوَرَان (fawarān), verbal noun of فَارَ (fāra, “to overflow, gush”).

feveran (definite accusative feveranı, plural feveranlar)

1. (geology, archaic) eruption
   • 1931 January 1, Son Posta, page 5:

     Somatra adasında bulunan (Merapi) yanardağı birkaç gündenberi feveran halindedir.

     (please add an English translation of this quotation)

2. (archaic) boiling over, gushing out

   Synonyms: kaynama, vurma, fışkırma

3. becoming enraged

• Devellioğlu, Ferit (1962) “feverân”, in Osmanlıca-Türkçe Ansiklopedik Lûgat‎‎^[1] (in Turkish), Istanbul: Türk Dil Kurumu, page 315
• Nişanyan, Sevan (2002–) “feveran”, in Nişanyan Sözlük
• Avery, Robert et al., editors (2013), The Redhouse Dictionary Turkish/Ottoman English, 21st edition, Istanbul: Sev Yayıncılık, →ISBN