ون

ـُونَ • (-ūna) m

1. Nominative-case suffix used to pluralize nouns and adjectives, generally masculine ones referring to people. The suffixe changes to ـِينَ (-īna) in the genitive and accusative cases.
2. -ty

• This suffix is mostly restricted to participles, nisbas, and certain nouns of other building types such as the measure فَعَّال (faʕʕāl). Only a handful of nouns not referring to people use this suffix, e.g. سِنُونَ (sinūna) from سَنة (sana, “year”). Most other nouns have broken plurals or use the “feminine” suffix ـَات (-āt). Note that borrowed nouns tend to use the latter even when they refer to people, e.g. بَهْلَوانَات (bahlawānāt) from بَهْلَوان (bahlawān, “acrobat”).

Perhaps from or related to Persian ون (van, “ash tree”).

ون • (ven)

1. fruit of the turpentine tree

• Redhouse, James W. (1890) “ون”, in A Turkish and English Lexicon‎, Constantinople: A. H. Boyajian, page 2152

From English van.

ون • (van) (plural ون‌ها (van-hâ))

1. van

Probably from Mazanderani [Term?]., from Middle Persian wn' (/⁠wan⁠/, “tree”), from Proto-Indo-Iranian *wán- (“tree, wood”).

ون • (van)

1. (archaic) ash tree

ـون • (-un)

1. Suffix which forms agent nouns.
2. Suffix which forms noun indicating a continuous action; Which finally forms either a noun, which would implicate a gerund, an activity / a ceremony, or an agent noun.
3. An accentual alternative or another form of the suffix ـان • (-an), which forms agent nouns.

From Arabic ـُونَ (-ūna, nominative plural suffix). See ین (-in) for more.

ـون • (-un, -yun)

1. (dated, literary) Alternative form of ین (-in, plural suffix), used with nouns ending in ـی (-i).

   ‎انقلابی (enqelâbi, “revolutionary”) + ‎ون → ‎انقلابیون (enqelâbiyun, “revolutionaries”)

   ‎ملی (melli, “nationalist”) + ‎ون → ‎ملیون (melliyun, “nationalists”)

• Steingass, Francis Joseph (1892) “ون”, in A Comprehensive Persian–English dictionary, London: Routledge & K. Paul
• Vullers, Johann August (1856–1864) “ون”, in Lexicon Persico-Latinum etymologicum cum linguis maxime cognatis Sanscrita et Zendica et Pehlevica comparatum, e lexicis persice scriptis Borhâni Qâtiu, Haft Qulzum et Bahâri agam et persico-turcico Farhangi-Shuûrî confectum, adhibitis etiam Castelli, Meninski, Richardson et aliorum operibus et auctoritate scriptorum Persicorum adauctum‎ (in Latin), volume II, Gießen: J. Ricker, page 1432b