Bio is a village in the municipality of Marzəsə in the Astara Rayon of

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Etymology

The correct name of the place name should be Bi'aov. The name of the settlement is derived from the Talysh words bi'a "cold" and ov "water" (Soyugsu village). Bi'u is a village in the Siyaku administrative unit of Astara district. It is located in the Lankaran lowland. The village takes its name from the name of a nearby mineral spring. Originally Buy'aov, this hydronym is composed of the Talysh words buy (smell, smell) and ov (water), meaning "smelly, fragrant water"."Azərbaycan toponimlərinin ensiklopedik lüğəti". İki cilddə. I cild. Bakı, "Şərq-Qərb", 2007, səh. 143

References

Populated places in Astara District {{Astara-geo-stubEtymology The correct name of the place name should be Bi'aov. The name of the settlement is derived from the Talysh words bi'a "cold" and ov "water" (Soyugsu village). Bi'u is a village in the Siyaku administrative unit of Astara district. It is located in the Lankaran lowland. The village takes its name from the name of a nearby mineral spring. Originally Buy'aov, this hydronym is composed of the Talysh words buy (smell, smell) and ov (water), meaning "smelly, fragrant water".