Definition of "io" []

• A type of moth, the io moth. (noun)
• An exclamation of joy or triumph. (interjection)

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• "(U) Tacitus tells us, that the power of Urgulania was io great, that fhe difdained to ap - pear as a witnefs in a certain caufe before the fenate » fo that a praetor was fent to examine her at her own houfe, though it had been always ufual, even io» ithe Veftal virgins, to attend the forum, and courts of juftice, whenever their evidence was required* to to Taniib of \tk\i."
• "With a brafs qua - drant of three feet radius, by one meridian altitude of the fun's upper limb, all neceflary aquations and deductions confidered, I determined the latitude of the place of obfer - vation to be 10° 59 1 1 "; and by another obfervation of the fame kind made on the 6th, io° 5 9 »*J afte r which b 7 a medium of thirty-three obfervations of liars, the largeft and neareft, the firft vertical, I found the latitude to be io 59 '10";"
• "Drop. io is taking on the likes of WebEx, GoToMeeting and all the other webinar/web conference/meeting apps out there with presentation. io, a service that lets you upload, describe, and manipulate files for anyone with a browser."