Henceforth, A Prius Grouping Shall Be Prii

When the people speak, they must be heard. So it was in Tunisia and Egypt; so it will be in Toyotaland, where online public voting has given the nod to Prii as the plural form of Prius.

The long-vexing question of what to call more than one Prius became a matter of urgency last month – among Prius devotees, at least – after three siblings joined the original Prius hybrid: the Prius Plug-in Hybrid vehicle (PHV), Prius V and Prius C concept.

Toyota, plural of Pirus, Prii

image via Toyota

Toyota said more than 1.8 million votes were cast in a six-week period that began with the unveiling of those upcoming Prii/Prius/Priuses/Prium/Prien at the North American International Auto Show in Detroit. The decision to go with Prii as the plural form was announced at the Chicago Auto Show, and to make it look really official Toyota brought along a representative from Dictionary.com, whose online entry now reflects the decision.

According to Toyota, Prii got 25 percent of the votes cast, barely beating out Prius, at 24 percent. Priuses (20 percent), Prien (18) and Prium (13) rounded out the voting.

“Community has always been a big part of the Prius brand, so it was only fitting that we invite the online communities to participate in the plural discussion,” said Colin Morisako, advertising manager for Toyota. “The people have spoken – Prii will be the accepted term used to describe multiple Prius vehicles going forward.”

Pete Danko is a writer and editor based in Portland, Oregon. His work has appeared in Breaking Energy, National Geographic's Energy Blog, The New York Times, San Francisco Chronicle and elsewhere.

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