From Romanian Comana.

Comana

1. A commune of Brașov County, Romania.
2. A commune of Constanța County, Romania.
3. A village in Comana, Constanța County, Romania.
4. A commune of Giurgiu County, Romania.
5. A village in Comana, Giurgiu County, Romania.

Borrowed from Ancient Greek Κόμανα (Kómana).

• (Classical Latin) IPA^(key): [kɔˈmaː.na]
• (modern Italianate Ecclesiastical) IPA^(key): [koˈmaː.na]

Comāna n pl (genitive Comānōrum); second declension

1. a town of Pontus, now Gümenek
2. a town of Cappadocia on the river Sarus

Second-declension noun (neuter), with locative, plural only.

• Comana in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
• “Comana”, in William Smith, editor (1854, 1857), A Dictionary of Greek and Roman Geography, volume 1 & 2, London: Walton and Maberly

From Coman +‎ -a.

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Comana f

1. a commune of Brașov County, Romania
2. a commune of Constanța County, Romania
3. a village in Comana, Constanța County, Romania
4. a commune of Giurgiu County, Romania
5. a village in Comana, Giurgiu County, Romania